sister-husbands

Sister-Husbands
Pronunciation: SISS-ter-huz-bundz

Noun

A pair of people so mentally and emotionally in sync that they finish each other’s thoughts without even trying, yet still manage to fuck each other properly over time.

“Those two debate would skip coffee and then argue about pineapple on pizza while having sex on a public beach—they’re total sister-husbands.”

by bestbethedefinition October 3, 2025

half-co-sister-in-law

Spouse's half-sibling's wife.

half-co-sister-in-law.

by Simaduria July 27, 2024

sister

a sister is someone who can be annoying sarcastic and loud but they are also someone who is loyal who is funny who is the prettiest person ever they are always there for you no matter what you can tell them anything and you know they arent telling anyone you can trust them with your life they are a built in best friend and you know you can count on them when things are rough you know they’re there they are tje definition of happiness and you should always be there for them how they’re there for you even if they bicker/argue with you they still wouldnt trade you for the world and i would never trade her/them for the world i love her with all my heart they have always stood by you and always will they are so important to me i wouldn’t trade them for anything i love them/her so much

i love my sister and forever will

by northfacee April 19, 2023

Burch sisters

When you can get with not only one but two girls and they are trashy sisters.

Where were you last night? Dude I was getting with the burch sisters.

by Snakesnake February 7, 2017

courtesy sister

A friend(no 'benefits') who's so close she's like a sister, or just is the mother of someone who calls you Uncle. (could be a former sexual partner, but who is only a friend now)

How many siblings do you have?

Well, I have 2 brothers, 2 sisters from my mom, & a half brother from my dad, & a courtesy sister I stilll keep in touch with.

by cyberpope67,BC,Canada May 2, 2021

Sodium Sister

A female who is being used ONLY due to one thing they have/provide

John: He Mark, do you have some gum?
Mark: No, but I’ll see if our Sodium Sister has some.

by Big Zucc May 25, 2018

Date your fake sister day

December 5 is the day you should say your fake sister and if y’all like it then y’all should date fake sister or fake brother go for it ! I mean try summ new!!

“It’s December 5 date your fake sister day”

by Lowkeykeen December 4, 2020