Sisterfriend

A sister friend is when you have one sister that also doubles as your best friend.

My sisterfriend is the only person actually nice to me.

Sisterfriend by What the boo boo boo ra ra ra June 1, 2020

Sisterfriend

Your sister, your only sister. She is your sister but a friend and the most amazing one at that.

First slurred out when I was drunk because there was no one word invented for her yet.

Sisterfriend is the best of both worlds: First she is your blood- Second she is your friend-confidant-reality check. Sometimes you fight and sometimes you get ridiculous with each other. She is a friend that will always be there because she has to- she's your sister duh!!!

I heart my sisterfriend so much but I'll slap that bitch if she borrows my clothes without asking again.

Sisterfriend by Callcp May 14, 2012

Sister friend 

A friend who is like a sister.

I love how my sister friend is supportive.

Sister friend by Rachaelschulman May 12, 2018

sistafriend 

A term of endearment between bffs, deaper then a girlfriend relationship.
Someone who is your friend by birth, your sister by choice.

hey sistafriend what ya got going on today?

Sistafriend! Did you hear...

sistafriend by AnjewlnWhite April 23, 2009

sister friend 

A person who is always there for you. Similar to a best friend but more, someone you hope will be in your life forever, she will be in your wedding and you two know eachother like sisters would.
Not developed with time, a person you meet and just know they are your sister friend.

I miss my sister friend, but physical distance can't keep us apart.

sister friend by BabyK87 February 25, 2010

sister-friend 

Your bestesting friend. Better than any friend. Who's been your friend for so long you might as well be sisters. You hate her you love her. She's your sister.

I have to make my sister-friend my maid of honor at my wedding or she'll kill me!

sister-friend by Dancingmelissa September 6, 2005

Brother/sister (friend)

A very close friend you trust a lot

When a brother/sister (friend) likes another so much and trusts them

Brother/sister (friend) by MasterOfStats January 1, 2019