Evil Stepsister 

Verb. To fit a body part (usually a foot) into a smaller than usual piece of clothing.

When looking at a pair of shoes that is clearly too small: "I can't even evil stepsister my way into those."

Evil Stepsister by GeckoGecko August 21, 2011

stepsister-in-law 

1- Stepsibling's wife.
2- Spouse's stepsister.

My stepsister-in-law is a good person.

stepsister-in-law by Wonbig October 13, 2021

stepsister 

A daughter of one's stepparent by a marriage other than with one's own parent.

My stepsister is a good person.

stepsister by Wonbig October 13, 2021

Stepsister Fandom 

-An opposite of sister fandoms
-When two fandoms are constantly fighting even though each of their idols are the best of friends with one another

Nicki and Taylor are so nice to each other during this year's vmas.. too bad they both have stepsister fandoms.

Stepsister Fandom by Pambihira August 29, 2022

stepsister 

Stepparent's daughter what is parent's stepdaughter.

My stepsister is a good person.

stepsister by Sonyc September 22, 2023

stepsister 

Stepparent's daughter (parent's stepdaughter).

My stepsister is a good person.

stepsister by Coldandhot October 14, 2023

stepsister 

Parent's stepdaughter and stepparent's daughter simultaneously.

stepsister.

stepsister by Simaduria July 27, 2024