National Sister Day

Sisters

Happy national sister day fav love you.

by Theyluvjadee October 7, 2021

sizzle sisters

a popular girlband.

made up of carley, lori, and merrily.

“wow, have you heard of the sizzle sisters?! they’re so cool, but they need a drummer!)

by red apple ice December 30, 2023

half-sister

Female person who, in relation to the other, has a one parent in common and a different one parent.

My half-sister is a good person.

by Usery May 3, 2021

three-quarter-sister

1- Daughter of mother and of uncle (father's brother) simultaneously.
2- Daughter of father and of aunt (mother's sister) simultaneously.
3- Cousin and half-sister simultaneously.

Three-quarter-sister.

by Chupite November 20, 2024

Big sister

So-called 'second mother'; glorified slave of their younger sibling (especially if it's a brother)/parents

I don't have a big sister

by Hello-553669 April 19, 2025

Sister in flaw

When your sister in law thinks she has diving board skills and can't even pull off a front flip.

You should of seen my sister in flaw embarrass herself at our subdivision pool.

by Webster 57 July 31, 2022

radiator sister

A woman who is a little rough around the edges but like a radiator in that she radiates or emits light, heat, & sound.

I like her style, she's definitely a radiator sister .

by MoreDirtyHarryThanGirl April 21, 2018