double-sibling-in-law

Sibling’s spouse and spouse’s sibling at the same time.

My double-sibling-in-law is a good person.

by Rwopazaq November 24, 2019

co-sibling-in-law

The spouse of one's spouse's sibling.

My co-sibling-in-law is a good person.

by Elivaldeq November 24, 2019

Cousinary Siblings

Cousins in a brother and sister relationship.

Cerissa P. Terminology

Cousinary Siblings- cousins that are best friends and have similarities. Resemble each other, physical similarities, similar personalities

by Cerissa P. Terminology February 29, 2020

forced sibling

A sibling under your age who you didn’t ask for to be born or your parents had without asking you.

Melissa: Kaylee has a forced sibling, how sad.
Jessica: I bet her parents don't care about her anymore.

by Yuhh :< June 11, 2020

oppo-siding

The act of asking someone's advise/opinion, but always against what they say.

Quit asking what I think if you're just gonna be oppo-siding!

by Divinessence June 15, 2020

Liquid sibling

A sibling of darkness.

Your liquid sibling is trying to scare everybody again.

by Solid Mantis October 7, 2020

Liquid sibling

A sibling of darkness.

Your liquid sibling is trying to scare everybody again. He/she is too chicken shit to say/do some of that shit in real life, but will show up in a video game as a video game character trying to fight you.

by Solid Mantis October 7, 2020