sursterly 

When some one can’t spell sisterly right

It’s not “sursterly” it’s sisterly you fucking idiot!

sursterly by Stfu nahh June 11, 2022

sisterly 

A friend who displays affection and kindness in a way your own sister would if she really cared about anyone but herself.

Jay was being super sisterly by supporting my decision to get an abortion.

sisterly by SBRstar October 10, 2013

Sisterly Love 

The 'love' between two sisters.

Normally sarcastic-

Y: Yup, my sister told me to jump off a cliff today..
N: Just 'sisterly love'.

Sisterly Love by Sillie-Tits February 16, 2018

sisterlybonding 

rubbing gel into leather seats in eachothers cars

me and my sister had some sisterlybonding time

sisterlybonding by j-great June 18, 2011