Younger sister 

The baby your mom gave birth to who isn't you. The one who is sometimes a curse, and sometimes a blessing.

Person 1: My younger sister photobombed me and now it's a meme, and a sticker!

Person 2: It's a gif, too!

Person 1: Oh boy, there goes the rest of the schoolyear.

Person 1: Who spread this rumor about me!?!?!?

Younger sister: Kat!

Person 1: Thank you! I'll tell her to take it down.

Younger sister by DJ Laguna November 14, 2023

Male Sister 

A brother who acts more sisterly towards his siblings, i.e. never fights with his siblings, always is nice to them, doesn’t bicker with them, etc.

Friend 1: Have you been to the Wilson’s house? I swear those kids never fight.

Friend 2: Yeah, you’re right. I’ve never heard Eli Wilson say an unkind word to his sisters.

Friend 1: He acts more like their sister than their brother tbh

Friend 2: Fr. He’s almost like a Male Sister.

Male Sister by randomopc February 21, 2024

Seoul Sister 

An Asian girl who is also a hoodlum

Don't fuck with Nene. She might look like a defenseless prostitute, but she carries a a glock wherever she goes. A true Seoul Sister, she is.

Seoul Sister by adnutor May 28, 2024

half-sister 

Female that has one parent in common with another living being.

Half-sister.

half-sister by Simaduria July 26, 2024

co-sister-in-law 

Spouse's sibling's wife.

co-sister-in-law.

co-sister-in-law by Simaduria July 26, 2024

half-sister-in-law 

1- Half-sibling's wife.
2- Spouse's half-sister.

half-sister-in-law.

half-sister-in-law by Simaduria July 27, 2024

Hill Sister 

A grown woman who is consistently competing against her own sister. Hill is taken from the old game king of the hill where only one player remains ontop of the hill and is crowned. They may also compete against other women or people too. They can be jealous , envoius or wanting what they feel they do not have. They start out seeking parents attention and affection when they were young . When they become older they add more to the mix. They practice the forbidden subtle art of one upmaship.

Sister Y just bought a house with her boyfriend of 10 years. Now single sister Z suddenly gets a boyfriend and moves into his new home. Sister Y gets married and so does sibling Z.

Sister Y made a scarf and Sister Z buys handmade item and shows it off.

Some do come off their hills.

Random guy - You know ya married a hill sister.

Hill Sister by Justanother definition August 18, 2024