Sister Nickname Generator

Funny and sweet names to call your sister

Real-World Names & CulturesPart of: real-world name generators1,000 names

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Find what to call your sister, out loud, in a card or in your phone: classics like Sis and Seester, teasing names like Hoodie Thief and Bossy Boots, mock titles such as Her Royal Bossiness, contact labels like Favorite Sister (By Default), and labeled words for sister from Hermanita to Unnie.

About this generator

Most sisters answer to something other than their name at home. It usually starts small, with Sis, Sissy or Seester, and a phone contact gives a second chance: the label only you see when she calls. This list of 1,000 covers both, and every entry works without knowing her first name.

Birth order does a lot of the joking. An older sister gets names about going first, such as Second Mom, The First Draft and Curfew Negotiator, while a younger one gets Tiny Boss, The Finale and Little Sister (Not So Little). Around those sit teasing names built on habits (Hoodie Thief, Bathroom Hog, Bossy Boots), sweet ones like Sunshine and Ladybug, mock titles such as Her Royal Bossiness and Chief Opinion Officer, contact labels like Favorite Sister (By Default), and names for twins, stepsisters, half sisters and sisters-in-law.

Many languages have one word for an older sister and another for a younger one, and some change the word with the speaker. Tagalog has Ate and Hindi has Didi for an older sister, Mandarin has Jiejie for an older and Meimei for a younger one, and in Korean a younger woman says Unnie while a younger man says Noona. Those entries carry a label in parentheses saying which sister the word is for, in common romanized spellings.

Tips for choosing a name

  • Pick a contact name for the screen it shows up on. Your phone displays it on the lock screen and in the car, so Sister (Do Not Lend Money) is funnier in private than when a coworker sees the call come in.
  • Match the word to the language, the birth order and the speaker before you borrow it. Ate, Didi and Jiejie are for an older sister only, Hermanita and Meimei are for a younger one, and in Korean Unnie is what a younger woman says while Noona is what a younger man says.
  • Tease about what she does, not what she is. Hoodie Thief and Shotgun Stealer are jokes she can laugh at and deny, while a name about looks or grades stops being fun the second time.
  • In a birthday card, open with the joke and close with the sweet one: Closet Raider on the front, First Best Friend inside.
  • For a sister-in-law or a stepsister, choose a name that says she belongs. Sister by Choice, Bonus Sister and Sister, No Asterisk all leave out the legal detail on purpose.

Frequently asked questions

What are funny names to call your sister?

Jokes about her habits land best: Hoodie Thief, Bathroom Hog, Bossy Boots, Queen of the Eye Roll and Mom's Informant are all in the list. Mock titles work too, such as Her Royal Bossiness, Duchess of Drama or Chief Opinion Officer. Keep it to things she does, so the joke stays friendly.

What is a good contact name for a sister?

A contact name can be longer than a spoken nickname because only you read it. Favorite Sister (By Default), Sister (Sends 14 Texts in a Row), Incoming Voice Memo and Sis (On Her Way, Allegedly) are examples from the list. Remember that it shows on your lock screen when she calls.

What do you call a big sister or a little sister?

For an older sister the list has Second Mom, Deputy Mom, The First Draft and Seniority Queen, and for a younger one Tiny Boss, Kid Sister, The Finale and Forever the Baby. A middle sister gets names like The Family Diplomat and The Monkey in the Middle. Twins have their own set, from Twinsie to Better Twin.

How do you say sister in other languages?

The list has labeled words from dozens of languages, among them Hermana (Spanish), Sœur (French), Schwester (German), Sorella (Italian) and Dada (Swahili). Many languages split the word by age: Ate in Tagalog, Abla in Turkish and Akka in Tamil all mean an older sister. Each of these entries says in parentheses which sister it is for, and a few say who uses it, such as Unnie, which a younger woman says in Korean.

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All 1,000 names

This is the complete list the generator above draws its random batches from, sorted A to Z and grouped by first letter.

Plain text, one name per line.

A: 32 names

  • Aapa (Urdu, older sister)
  • Abaayo (Somali, sister)
  • Abji (Persian, casual, sis)
  • Abla (Turkish, older sister)
  • Achot (Hebrew, sister)
  • Achot Gdola (Hebrew, big sister)
  • Achot Ktana (Hebrew, kid sister)
  • Achoti (Hebrew, my sister)
  • Adelfi (Greek, sister)
  • Adelfoula (Greek, affectionate, little sister)

A, continued

  • Adik (Indonesian and Malay, younger sibling)
  • Admiral of Attitude
  • Agent of Chaos
  • Agent Sister
  • Ahizpa (Basque, a woman's sister)
  • Akka (Tamil, Telugu and Kannada, older sister)
  • Almost Sister-in-Law
  • Almost Twin
  • Always Older Than Me
  • Always Right (Just Ask Her)
  • Ambassador of Good Vibes

A, continued

  • Ambassador to Mom and Dad
  • Aneki (Japanese, older sister, rough and casual)
  • Aniyathi (Malayalam, younger sister)
  • Apke (Kazakh, older sister)
  • Apu (Bengali, older sister)
  • Arreba (Basque, a man's sister)
  • Assistant Manager of Chaos
  • Assistant to the Regional Mom
  • Ate (Tagalog, older sister)
  • Aunt to My Kids
  • Auntie in Chief

B: 68 names

  • Baby of the Family
  • Baby Sister (Has a Mortgage)
  • Baby Whisperer
  • Bacı (Azerbaijani, sister)
  • Backseat Line Drawer
  • Badi Behen (Hindi, elder sister)
  • Bahini (Nepali, younger sister)
  • Baji (Urdu, older sister)
  • Baking Queen
  • Ballerina
  • Banana Bread Baker
  • Bargain Hunter
  • Baroness Borrows-a-Lot

B, continued

  • Baroness of the Snooze Button
  • Basically My Sister
  • Bathroom Hog
  • Bedtime Story Reader
  • Behen (Hindi, sister)
  • Behna (Hindi, affectionate, sister)
  • Beloved Sister
  • Ben (Gujarati, sister)
  • Best Friend Since the Crib
  • Best Friend Turned Sister
  • Best SIL
  • Best Sister Ever
  • Bestie
  • Bestie for Life

B, continued

  • Better Twin
  • Bhain (Punjabi, sister)
  • Bhenji (Punjabi, respectful, sister)
  • Big Sis
  • Big Sister (Actually Helpful)
  • Big Sister (Thinks She's Mom)
  • Big Sister Energy
  • Bike Ride Buddy
  • Birdie
  • Birthday Card Champion
  • Birthday Twin
  • Bitsy
  • Blackmail Material Holder

B, continued

  • Blanket Burrito
  • Blanket Fort Architect
  • Blanket Hog
  • Blood Type: Related
  • Blossom
  • Bobby Pin Trail
  • Bon (Bengali, sister)
  • Bong Srey (Khmer, older sister)
  • Bonus Round Sister
  • Bonus Sister
  • Bookworm Sister
  • Borrowed My Jacket in 2019
  • Boss Lady
  • Bossy Boots

B, continued

  • Braid Master
  • Breaking News Desk
  • Brings the Good Pie
  • Brunch Buddy
  • Bubbles
  • Bug
  • Built-In Babysitter
  • Bumblebee
  • Bunkmate
  • Bunny
  • Bunso (Tagalog, youngest sibling)
  • Busy Bee
  • Buttercup
  • Button

C: 61 names

  • Cake Sharer
  • Call Me Back
  • Call Mom, Then Call Me
  • Calls During Dinner
  • Calls Mom Every Day
  • Came With the Ring
  • Can I Borrow
  • Captain of the Carpool
  • Captain Sassy
  • Captain Sis
  • Car Game Champion
  • Card Game Shark

C, continued

  • Cartwheel Queen
  • Cat Sitter on Call
  • CEO of Being Right
  • CEO of Borrowing My Stuff
  • CEO of Overthinking
  • CEO of the Family
  • Cereal Box Emptier
  • Chaos in Pigtails
  • Chatterbox
  • Chechi (Malayalam, older sister)
  • Chelli (Telugu, younger sister)
  • Chhoti Behen (Hindi, younger sister)

C, continued

  • Chhoto Bon (Bengali, younger sister)
  • Chị (Vietnamese, older sister)
  • Chị Gái (Vietnamese, older sister)
  • Chị Hai (Southern Vietnamese, eldest sister)
  • Chickadee
  • Chief Advice Officer
  • Chief Executive Sister
  • Chief Gossip Officer
  • Chief Hype Officer
  • Chief of Staff, Mom Division
  • Chief Opinion Officer
  • Chief Outfit Consultant

C, continued

  • Chief Snack Officer
  • Chief Troublemaker
  • Chipmunk
  • Chosen Sister
  • Chwaer (Welsh, sister)
  • Chwaer Fach (Welsh, little sister)
  • Chwaer Fawr (Welsh, big sister)
  • Closet Raider
  • Coffee Date Regular
  • Commander of the Car Radio
  • Concert Buddy
  • Cookie Baker

C, continued

  • Cookie Dough Thief
  • Cookie Monster of the House
  • Copycat
  • Couch Hog
  • Countess of Chaos
  • Countess of the Couch
  • Cousin Sister
  • Cousin Who Is Basically a Sister
  • Craft Queen
  • Crossword Whiz
  • Crown Sister
  • Cupcake
  • Curfew Negotiator

D: 50 names

  • Da (Georgian, sister)
  • Dad's Favorite (Confirmed)
  • Dad's Little Girl
  • Dada (Swahili, sister)
  • Dadewethu (Zulu, my sister)
  • Daily Life Update
  • Daisy
  • Dajie (Mandarin, eldest sister)
  • Dame Drama
  • Dame of the Dinner Table
  • Dance Recital Star
  • Dancing Queen

D, continued

  • Daredevil
  • Darling Girl
  • Darling Sister
  • Dean of Drama
  • Dear Old Sis
  • Dear One
  • Dear Sister
  • Dearest Sis
  • Dearie
  • Deirfiúr (Irish, sister)
  • Deputy Mom
  • Dewdrop
  • Diary Keeper

D, continued

  • Diary Lock Picker
  • Didi (Hindi and Bengali, older sister)
  • Director of Birthday Planning
  • Director of Family Gossip
  • Director of Holiday Logistics
  • Director of Unsolicited Advice
  • Director of Wardrobe
  • Ditse (Tagalog, second older sister)
  • Diva
  • Do Not Answer, It's a Favor
  • Doctor Know-It-All
  • Dog Aunt

D, continued

  • Dollhouse Landlord
  • Doodlebug
  • Door Slammer
  • Double Dutch Partner
  • Drama Department
  • Drama Llama
  • Drama Queen
  • Dress-Up Director
  • Duchess of Drama
  • Duchess of Sass
  • Duchess of Snacks
  • Duchess of the Duvet
  • Ducky

E: 10 names

  • Egch (Mongolian, older sister)
  • Ehite (Amharic, my sister)
  • Eldest Daughter
  • Eldest Daughter Syndrome
  • Em Gái (Vietnamese, younger sister)
  • Empress of the Spice Rack
  • Empress of the Thermostat
  • Empress of the Top Bunk
  • Extra Sister
  • Eye Roll Champion

F: 33 names

  • Family Pioneer
  • Family Press Secretary
  • Family Spokeswoman
  • Family Therapist (Unlicensed)
  • Family Treasurer
  • Fashion Police
  • Favorite Sister (By Default)
  • Favorite Sister (She Typed This)
  • Fellow Survivor of Our Childhood
  • Fellow Troublemaker
  • Female Sibling Unit

F, continued

  • Finishes My Sentences
  • Firecracker
  • Firefly
  • First Best Friend
  • First Call, Every Time
  • First Daughter
  • First Lady of the Family
  • First to Drive
  • First to Leave Home
  • Flashlight Reader
  • Forever the Baby

F, continued

  • Fort Co-Builder
  • Frangine (French slang, sis)
  • Fratino (Esperanto, sister)
  • Free Spirit
  • Freeze Tag Legend
  • Friend for Life, No Refunds
  • Friendship Bracelet Maker
  • Front Row Fan
  • Front Seat Hog
  • Fry Thief
  • Fun Police

G: 26 names

  • Ga Je (Cantonese, older sister)
  • Gamer Girl
  • General Bossy
  • Germana (Catalan, sister)
  • Germaneta (Catalan, little sister)
  • Gift With Purchase
  • Gift Wrap Perfectionist
  • Giggles
  • Girl Boss of the House
  • Glitter Spiller
  • Glue Gun Hero
  • Go Fish Shark
  • Go-Getter

G, continued

  • Goalie Girl
  • Godmother Material
  • Got Dad's Stubborn Streak
  • Got Mom's Laugh
  • Got the New Clothes
  • Grammar Police
  • Grande Sœur (French, big sister)
  • Grandma's Favorite
  • Groom's Sister, Tissue Supplier
  • Große Schwester (German, big sister)
  • Grote Zus (Dutch, big sister)
  • Group Chat Admin
  • Gym Buddy (Sometimes)

H: 54 names

  • Had the Car First
  • Had the Room First
  • Hair Braider
  • Hair Tie Hoarder
  • Hairbrush Hoarder
  • Half of My Childhood
  • Half Raised Me
  • Half Sister, Full Volume
  • Half Sister, Whole Heart
  • Halloween Candy Auditor
  • Head Cheerleader
  • Head of Gift Ideas
  • Head of Household Drama

H, continued

  • Head of Outfit Approval
  • Head of Sibling Relations
  • Heart Emoji Only
  • Heir to the Good Jewelry
  • Heiress to Mom's Recipes
  • Her Eminence of the Front Seat
  • Her Excellency
  • Her Grace
  • Her Highness of the Hallway
  • Her Ladyship
  • Her Majesty
  • Her Majesty the Eldest
  • Her Royal Bossiness
  • Her Royal Highness

H, continued

  • Her Royal Lateness
  • Her Royal Loudness
  • Her Royal Sassiness
  • Hermana (Spanish, sister)
  • Hermana Mayor (Spanish, older sister)
  • Hermana Menor (Spanish, younger sister)
  • Hermanita (Spanish, little sister)
  • Hero in Fuzzy Socks
  • Heroine
  • Hey Sis
  • Hide and Seek Champion
  • Holder of Embarrassing Photos
  • Holds My Spare Key

H, continued

  • Home in Human Form
  • Honeybee
  • Honorary Sister
  • Honorary Twin
  • Hoodie Thief
  • Hopscotch Champ
  • Húg (Hungarian, younger sister)
  • Hugi (Hungarian, affectionate, little sis)
  • Human Alarm Clock (Unwanted)
  • Human Planner
  • Hums in Every Room
  • Hurricane Sister
  • Hype Squad of One
  • Hype Woman

I: 12 names

  • I Spy Champion
  • Imouto (Japanese, younger sister)
  • In Case of Emergency, Call Her
  • In-Law, No Flaw
  • Incoming Drama
  • Incoming Voice Memo
  • Inside Joke Keeper
  • Inspector Nosy
  • Irmá (Galician, sister)
  • Irmã (Portuguese, sister)
  • Irmãzinha (Portuguese, little sister)
  • Isosisko (Finnish, big sister)

J: 9 names

  • Jellybean
  • Jiejie (Mandarin, older sister)
  • Jiji (Hindi, elder sister)
  • Jitterbug
  • Joined the Family Willingly
  • Judge and Jury
  • Jump Rope Queen
  • June Bug
  • Junior Sister

K: 20 names

  • Kaikuahine (Hawaiian, a man's sister)
  • Kak (Indonesian and Malay, short for kakak)
  • Kaka (Bulgarian, older sister)
  • Kakak (Indonesian and Malay, older sibling)
  • Kapatid (Tagalog, sibling)
  • Karaoke Partner
  • Karaoke Queen
  • Keeper of Family Stories
  • Keeper of the Crown
  • Keeper of the Remote

K, continued

  • Khahar (Persian, sister)
  • Kid Sister
  • Kiddlywinks
  • Kitchen Wizard
  • Kız Kardeş (Turkish, sister, usually the younger)
  • Kleine Schwester (German, little sister)
  • Kleine Zus (Dutch, younger sister)
  • Know-It-All
  • Kuyr (Armenian, sister)
  • Kuyrik (Armenian, affectionate, sis)

L: 49 names

  • Label Your Food
  • Lady Naps-a-Lot
  • Lady of the House
  • Lady of the Long Shower
  • Lady Sasses-a-Lot
  • Lady Talks-a-Lot
  • Ladybird
  • Ladybug
  • Laojie (Mandarin, casual, older sis)
  • Laomei (Mandarin, casual, younger sis)
  • Last Slice Thief
  • Last Word Champion

L, continued

  • Latest Addition
  • Lead Sister
  • Leading Lady
  • Leaf Pile Diver
  • Leaves Me on Read
  • Leaves the Porch Light On for Me
  • Left Me on Delivered
  • Lemonade Stand CEO
  • Library Card Queen
  • Life Coach (Self-Appointed)
  • Lifelong Sidekick
  • Light Switch Leaver

L, continued

  • Lightning Bug Catcher
  • Lillasyster (Swedish, little sister)
  • Lillesøster (Norwegian and Danish, little sister)
  • Lip Sync Legend
  • List Maker
  • Little Echo
  • Little Lady
  • Little Miss Dramatic
  • Little Miss Gets Her Way
  • Little Miss Organized
  • Little Miss Perfect
  • Little Miss Sunshine

L, continued

  • Little Sis
  • Little Sister (Not So Little)
  • Little Sister (Now Gives Me Advice)
  • Little Trouble
  • Little Wren
  • Living Room Choreographer
  • Long May She Nag
  • Long-Distance Sister
  • Looks Like Mom, Acts Like Dad
  • Loses Her Phone in Her Hand
  • Lost Earring Detective
  • Lovebug
  • Lunchbox Swapper

M: 90 names

  • Madam Bossypants
  • Madam Chairwoman
  • Madam President
  • Madam Secretary of Snacks
  • Made Me Play the Student
  • Made Me the Dog in Every Game
  • Maid of Honor on Call
  • Main Character
  • Main Sis
  • Majesty Junior
  • Mana (Portuguese, sis)
  • Manager of Mom's Expectations
  • Manager of the Family Calendar
  • Manang (Ilocano and Cebuano, older sister)
  • Maninha (Portuguese, little sis)

M, continued

  • Manita (Mexican Spanish, short for hermanita)
  • Map Reader
  • Marchioness of Mischief
  • Māsa (Latvian, sister)
  • Māsiņa (Latvian, affectionate, little sister)
  • Matching Outfit Victim
  • Matching Pajamas
  • Mbak (Javanese, older sister)
  • Megali Adelfi (Greek, big sister)
  • Meimei (Mandarin, younger sister)
  • Middle and Proud
  • Middle Seat Champion
  • Mikri Adelfi (Greek, little sister)
  • Milk Finisher
  • Mini Sis

M, continued

  • Minister of Bedtime Stories
  • Minister of Family Affairs
  • Mischief Maker
  • Mischief Managed
  • Miss Bossy
  • Miss Chatty
  • Miss Fashionably Late
  • Miss Five More Minutes
  • Miss Majesty
  • Miss Mischief
  • Miss Muffet
  • Miss Priss
  • Miss Punctual (Never)
  • Miss Responsible
  • Miss Sass

M, continued

  • Miss Thing
  • Mladshaya Sestra (Russian, younger sister)
  • Młodsza Siostra (Polish, younger sister)
  • Mom 2.0
  • Mom Junior
  • Mom's Baby
  • Mom's Favorite (Allegedly)
  • Mom's First Experiment
  • Mom's Hotline
  • Mom's Informant
  • Mom's Mini
  • Mom's Twin
  • Mom, She Started It
  • Monarch of the Middle Seat
  • Monopoly Cheater

M, continued

  • Motër (Albanian, sister)
  • Motor Mouth
  • Mouse
  • Movie Night Regular
  • Movie Picker
  • Mui Mui (Cantonese, younger sister)
  • Munchkin
  • My Brother's Better Half
  • My Built-In Bridesmaid
  • My Compass
  • My Conscience
  • My Day One Girl
  • My Emergency Snack Supplier
  • My Favorite Hello
  • My Favorite Phone Call

M, continued

  • My First Boss
  • My First Roommate
  • My First Teacher
  • My Forever Roommate
  • My Kids' Favorite
  • My Little Tagalong
  • My Loudest Cheerleader
  • My Lucky Charm
  • My Matching Set
  • My Mirror
  • My North Star
  • My Reflection
  • My Ride Home
  • My Safe Place
  • My Unpaid Therapist

N: 16 names

  • Nangi (Sinhala, younger sister)
  • Nee-chan (Japanese, big sis, childlike)
  • Nee-san (Japanese, older sister, casual)
  • Needs My Charger
  • Neither Oldest nor Youngest
  • Newest Sister
  • Night Light Negotiator
  • Night Shift Hero

N, continued

  • No Boys Allowed Sign Maker
  • Nong Sao (Thai, younger sister)
  • Noona (Korean, older sister, said by a younger man)
  • Not by Blood, Still My Sister
  • Nővér (Hungarian, older sister)
  • Number One Daughter
  • Nurse Sis
  • Nwanne Nwanyi (Igbo, sister)

O: 18 names

  • Õde (Estonian, sister)
  • Off-Key Queen
  • Official Gift Wrapper
  • Official Outfit Critic
  • Official Secret Keeper
  • Official Tiebreaker
  • Oldest and Boldest
  • Oldest and Wisest
  • One-Woman Cheer Squad

O, continued

  • One-Woman Show
  • Onee-chan (Japanese, big sis, affectionate)
  • Onee-san (Japanese, older sister)
  • Only Sister (Wins by Forfeit)
  • Opa (Uzbek, older sister)
  • Opinion Machine
  • Other Musketeer
  • Outfit Inspector
  • Overachiever

P: 35 names

  • Paoun Srey (Khmer, younger sister)
  • Partner in Crime
  • Partner in Pranks
  • Partner in Shenanigans
  • Partner in Snacks
  • Party Planner
  • Peaches
  • Peanut
  • Pep Talk Giver
  • Personal Shopper
  • Personal Stylist (Unpaid)

P, continued

  • Petite Sœur (French, little sister)
  • Phi Sao (Thai, older sister)
  • Phone Glued to Hand
  • Pickle
  • Pikkusisko (Finnish, little sister)
  • Pillow Fort Queen
  • Piuthar (Scottish Gaelic, sister)
  • Pixie
  • Plant Lady
  • Playing School Teacher
  • Playlist Hijacker
  • Pocket Dialer

P, continued

  • Poet Laureate of the Family
  • Potluck Overachiever
  • President of the Sister Club
  • Princess of Procrastination
  • Princess of Quite a Lot
  • Princess of the Passenger Seat
  • Princess Pajamas
  • Princess Sassypants
  • Professor of Sarcasm
  • Professor Sis
  • Pumpkin
  • Puzzle Piece Hider

Q: 11 names

  • Queen Bee
  • Queen of Comebacks
  • Queen of Naps
  • Queen of the Bathroom
  • Queen of the Eye Roll
  • Queen of the Group Chat
  • Queen of the House
  • Queen of the Last Word
  • Queen of the Pancake Flip
  • Queen Sis the First
  • Queen Sister

R: 24 names

  • Raised Me a Little
  • Read at 9:02
  • Read My Diary
  • Reads the Instructions First
  • Rebel Girl
  • Recipe Texter
  • Referee
  • Regent of the Refrigerator
  • Remembers Every Birthday
  • Remote Hog
  • Remote Wrestler
  • Returner of Nothing

R, continued

  • Reunion Organizer
  • Road Trip Co-Captain
  • Road Trip DJ in Training
  • Road Trip Navigator
  • Role Model (Allegedly)
  • Roller Skate Partner
  • Rookie
  • Roomie Since Before Birth
  • Royal Highness of Snacks
  • Royal Pain
  • Ruler of the Roost
  • Rules Did Not Apply

S: 238 names

  • Sai Mui (Cantonese, kid sister)
  • Same Birthday, Different Vibes
  • Same Face, Different Opinions
  • Same Heart, Different Hair
  • Sass Factory
  • Sass Master
  • Saturday Cartoon Buddy
  • Saver of the Day
  • Scared of the Dark Buddy
  • Scene Stealer
  • School Bus Seat Saver
  • Schwester (German, sister)
  • Schwesterchen (German, little sister)
  • Schwesterherz (German, sister dear)

S, continued

  • Screenshot Sender
  • Second Mom
  • Second Opinion
  • Secret Handshake Holder
  • Secretary of Sass
  • Secretary of the Interior Decorating
  • Seester
  • Seestie
  • Ségra (Czech slang, sis)
  • Seka (Serbian and Croatian, affectionate, sis)
  • Sends Me Dog Videos
  • Sends Real Mail
  • Senior Sister
  • Seniority Queen
  • Sergeant Sass

S, continued

  • Sesė (Lithuanian, sis)
  • Sestra (Russian, Czech and Serbian, sister)
  • Sestrichka (Russian, affectionate, little sister)
  • Sestřička (Czech, affectionate, little sister)
  • Sestrička (Slovak, affectionate, sis)
  • Sestrychka (Ukrainian, affectionate, sis)
  • Sesuo (Lithuanian, sister)
  • Sesutė (Lithuanian, affectionate, little sister)
  • Shared Playlist Partner
  • She Started It
  • She Walked So I Could Run
  • She Wants Something
  • She's on My Side
  • Shero
  • Shopping Buddy

S, continued

  • Shotgun Stealer
  • Shower Singer
  • Showstopper
  • Shvester (Yiddish, sister)
  • Shvesterl (Yiddish, affectionate, sis)
  • Sib
  • Siblet
  • Sibster
  • Sidekick
  • Signed Up for This Family
  • SIL
  • Silly Goose
  • Singil (Uzbek, younger sister)
  • Sings in the Car
  • Siostra (Polish, sister)

S, continued

  • Siostrzyczka (Polish, affectionate, little sister)
  • Sis
  • Sis (Abroad)
  • Sis (Emergency Contact)
  • Sis (Has Mom's Recipe)
  • Sis (Lost Her Keys Again)
  • Sis (On Her Way, Allegedly)
  • Sis (Running Late)
  • Sis Numero Uno
  • Sis of Mine
  • Sis Supreme
  • Sis the Great
  • Sis Whiz
  • Sis-Sis
  • Sis-Star

S, continued

  • Sisar (Finnish, sister, formal)
  • Sisaroni
  • Sisko (Finnish, sister)
  • Sissa
  • Sissaroo
  • Sisser
  • Sissy
  • Sissy Bear
  • Sissy Belle
  • Sissy Boo
  • Sissy Lou
  • Sissy Pop
  • Sissykins
  • Sister (Answer This One)
  • Sister (Calls About Nothing)

S, continued

  • Sister (Check Her Location)
  • Sister (Do Not Lend Money)
  • Sister (East Coast)
  • Sister (Has My Hoodie)
  • Sister (Has the Good Snacks)
  • Sister (Knows My Passwords)
  • Sister (Knows Where Everything Is)
  • Sister (Laughs at Her Own Jokes)
  • Sister (Narrates Her Errands)
  • Sister (New Number)
  • Sister (Owes Me Lunch)
  • Sister (Pick Up, It's Gossip)
  • Sister (Probably Needs a Ride)
  • Sister (Sends 14 Texts in a Row)
  • Sister (The Loud One)

S, continued

  • Sister (The Nice One)
  • Sister (Two Time Zones Away)
  • Sister (Will Send Memes)
  • Sister (Work Phone)
  • Sister Across the Miles
  • Sister Across the Ocean
  • Sister Bug
  • Sister by Blood, Friend by Choice
  • Sister by Chance
  • Sister by Choice
  • Sister by Heart
  • Sister by Luck
  • Sister by Marriage
  • Sister by Paperwork
  • Sister by Wedding

S, continued

  • Sister Extraordinaire
  • Sister Face
  • Sister Fantastic
  • Sister for Keeps
  • Sister Friend
  • Sister From Another Family
  • Sister From Another Zip Code
  • Sister Girl
  • Sister I Chose
  • Sister in Charge
  • Sister Love
  • Sister Mine
  • Sister Number One
  • Sister Number Two

S, continued

  • Sister of the Bride, Bouquet Holder
  • Sister of the Century
  • Sister of the Year
  • Sister Pie
  • Sister Prime
  • Sister Signal
  • Sister Since College
  • Sister Since Kindergarten
  • Sister Sunshine
  • Sister Sweetheart
  • Sister Under a Different Roof
  • Sister Unit
  • Sister Without the DNA
  • Sister Woman
  • Sister, Full Stop

S, continued

  • Sister, No Asterisk
  • Sister-in-Awe
  • Sister-in-Law (The Fun One)
  • Sister-in-Law (Upgrade)
  • Sister-in-Law of the Year
  • Sister-in-Law, Coming Soon
  • Sister-in-Law, Friend First
  • Sister-in-Love
  • Sisterbelle
  • Sisterdoodle
  • Sisterella
  • Sisterhood of One
  • Sisterino
  • Sisterkins
  • Sisternator

S, continued

  • Sisteroo
  • Sisterpants
  • Sisterzilla
  • Sistopher
  • Sisty
  • Sleepover Captain
  • Slumber Party Host
  • Small but Mighty
  • Small Fry
  • Smalls
  • Smiley
  • Snack Thief
  • Snugglebug
  • Soccer Star
  • Sock Thief

S, continued

  • Songbird
  • Soră (Romanian, sister)
  • Sorella (Italian, sister)
  • Sorella Maggiore (Italian, older sister)
  • Sorella Minore (Italian, younger sister)
  • Sorellina (Italian, little sister)
  • Sorellona (Italian, big sister)
  • Soror (Latin, sister)
  • Sorority Sister
  • Søster (Norwegian and Danish, sister)
  • Sœur (French, sister)
  • Sourdough Scientist
  • Sœurette (French, affectionate, little sister)
  • Souvenir Bringer
  • Sovereign of the Sofa

S, continued

  • Spare Sister
  • Sparkle
  • Speakerphone Enthusiast
  • Special Agent Snoop
  • Spitfire
  • Spoils the Ending
  • Spreadsheet Queen
  • Sprinkler Runner
  • Sprinkles
  • Squirt
  • Starlet
  • Starshaya Sestra (Russian, older sister)
  • Starsza Siostra (Polish, older sister)
  • Step Up Sister
  • Stepsis

S, continued

  • Stepsister, Skip the Step
  • Sticky Note Author
  • Still Has My Sweater
  • Storasyster (Swedish, big sister)
  • Storesøster (Norwegian and Danish, big sister)
  • Streak Keeper
  • Stuck in the Middle
  • Stuffed Animal Hoarder
  • Sugarplum
  • Sultana of Sarcasm
  • Sunny Girl
  • Sunshine
  • Super Sis
  • Superstar
  • Supervisor of Everything

S, continued

  • Supreme Ruler of the Back Seat
  • Supreme Sister
  • Surioară (Romanian, affectionate, little sister)
  • Surprise Sister
  • Sussie (Afrikaans, affectionate, sis)
  • Suster (Afrikaans, sister)
  • Sweater Bandit
  • Sweet Girl
  • Sweet Pea
  • Sweet Sister
  • Sweet Tooth
  • Swing Set Daredevil
  • Syrran (Swedish slang, sis)
  • Syster (Swedish, sister)
  • Systir (Icelandic, sister)

T: 109 names

  • Tai (Marathi, older sister)
  • Talent Show Director
  • Talks Through Movies
  • Tangi (Kannada, younger sister)
  • Tattletale
  • Tea Hotline
  • Tea Party Host
  • Teacher Sis
  • Teeny
  • Teina (Māori, a woman's younger sister)
  • Tells Mom Everything
  • Teteh (Sundanese, older sister)
  • Text Don't Call

T, continued

  • Thangachi (Tamil, younger sister)
  • Thanksgiving Host
  • The Artsy One
  • The Baby
  • The Babysitter
  • The Best Gift Mom Gave Me
  • The Bonus Baby
  • The Borrower
  • The Calm One
  • The Cautionary Tale
  • The Cool Aunt
  • The Eldest
  • The Family Diplomat
  • The Favorite

T, continued

  • The Finale
  • The First Draft
  • The Forgotten Middle
  • The Fun One
  • The Good Daughter
  • The Good Example
  • The Hand-Me-Down Source
  • The Headliner
  • The Ice Breaker
  • The In-Law Who Stayed
  • The Judge
  • The Last Word
  • The Loud One

T, continued

  • The Middle Child
  • The Monkey in the Middle
  • The Older Twin (By Four Minutes)
  • The One Who Knows Best
  • The Organized One
  • The Other Daughter
  • The Other Half
  • The Other Pea
  • The Path Clearer
  • The Peacemaker
  • The Practice Kid
  • The Queen Has Texted
  • The Reigning Sister
  • The Ringleader

T, continued

  • The Role Model
  • The Rule Breaker Before Me
  • The Scout
  • The Second Daughter
  • The Sensible Twin
  • The Sister I Always Wanted
  • The Sister I Gained
  • The Sister I Got to Pick
  • The Sister I Would Pick Anyway
  • The Sister My Brother Brought Home
  • The Sister Who Signed My Permission Slips
  • The Sporty One
  • The Standard Setter
  • The Stubborn One

T, continued

  • The Tagalong
  • The Test Pilot
  • The Trial Run
  • The Vanguard
  • The Wild One
  • The Wise One
  • The Younger Twin (By Four Minutes)
  • The Youngest
  • Thelma to My Louise
  • Three Missed Calls
  • Thrift Queen
  • Thrift Store Partner
  • Throne Hog

T, continued

  • Thunderstorm Buddy
  • Tiara Optional
  • Tiara Wearer
  • Time Zone Rival
  • Tink
  • Tiny Boss
  • Tiny Dictator
  • Tiny Tyrant
  • Told on Me in 2009
  • Tooth Fairy Witness
  • Tornado in Sneakers
  • Trailblazer
  • Training Wheels Coach
  • Treehouse Co-Owner

T, continued

  • Trivia Champ
  • Trouble Number Two
  • Trusty Sidekick
  • Tsarina of House Rules
  • Tuafafine (Samoan, a man's sister)
  • Tuahine (Māori, a man's sister)
  • Tuakana (Māori, a woman's older sister)
  • Twin
  • Twin in Spirit
  • Twin, the Sequel
  • Twinsie
  • Two for One Sister
  • Two-Hour Shower
  • Typing for Ten Minutes

U: 9 names

  • Ukht (Arabic, sister)
  • Ukhti (Arabic, my sister)
  • Uni (Minangkabau, older sister)
  • Unnie (Korean, older sister, said by a younger woman)
  • Uno Reverse
  • Unofficial Sister
  • Unpaid Babysitter
  • Unsolicited Advice Line
  • Used All the Shampoo

V: 4 names

  • Vice President of Mischief
  • Viscountess of Volume
  • Voice Memo Queen
  • Volume One

W: 16 names

  • Walk and Talk Partner
  • Walking Calendar
  • Walking Opinion
  • Wants the Wi-Fi Password
  • Wedding Speech Giver
  • Went First, Took Notes
  • Whisper After Lights Out
  • Whole Sister, Half the Paperwork

W, continued

  • Wild Child
  • Wildflower
  • Wise Beyond Her Years
  • Witness to Everything
  • Wonder Sis
  • Wore It First
  • World's Best Sister (Self-Awarded)
  • World's Okayest Sister

X: 1 name

  • Xiaomei (Mandarin, youngest sister)

Y: 3 names

  • Yarn Collector
  • Yeodongsaeng (Korean, younger sister)
  • Youngest and Loudest

Z: 2 names

  • Zus (Dutch, sister)
  • Zusje (Dutch, little sister)