sidechick 

the other woman; also known as the mistress; a female that is neither a male's wife or girlfriend who has relations with the male while he is in another relationship

Kimmy: Look at Tina and Josh...are they going out?
Sally: No Kimmy! Josh is dating Laura. Tina is just his sidechick.

sidechick by iamwifey January 19, 2007

Sidechick 

A sidechick is a women that you have a separate relationship with

Wife: WHO THE FUCK IS THAT?!

Husband: She's my sidechick

Sidechick by FluffyMan20 May 9, 2016

sidechick 

a side chick is a person with another person while that person is in a realationship

a man have his wife and he as another girl that is not his wife nor his girlfriend so that girl is his sidechick

sidechick by brianna graham from cdwn July 19, 2016

Sidechick 

A position allocated to a girl which is neither a wifey or a girlfriend but a side dish like nandos rice

"Hey, look at those sidechicks Amy, cheyan tattendaa"

Sidechick by anonalie August 27, 2013

sidechick 

sidechick is known as the mistress; a female that is neither a male's wife or girlfriend who has relations with the male while he is in another relationship

liv is not his girlfriend it’s his sidechick.

sidechick by sammicakes1202 July 3, 2019

Sidechick 

The person you are cheating on your boyfriend( or girlfriend) on

Oh no! My wife found out about my sidechick

Sidechick by Hi I'm bobbob November 22, 2018

Sidechick 

Girls you have sex with on and off whilst you're looking for the one you want to go out with.

Georgia: Duncan and Siobhan slept together again last night. Do you think they're gonna go out?

Rafe: Nah, Duncan fancies Jodi, not her. Siobhan's just his sidechick.

Sidechick by wolfsbaneT9 August 7, 2013