Series Cheater 

One who forward watches episodes of the series being watched with one's partner, some believe this to be of malicious nature.

His wife was pissed when she found out he was a "series cheater". This discovered while he was in his man-cave pouting..

Series Cheater by JimmyKariSteel September 18, 2020

macro cheater 

someone who is fast at editing

not every person who is fast at editing has macros

ryft is a macro cheater

macro cheater by jimmy with 3 m's March 16, 2021

toxic cheater 

a person that participates in cheating because they have no respect for themselves or anyone else they have involved with their disgusting, lowlife activities while encouraging the behavior they’ve become accustomed to.

“ Saleen was devastated when she found out her friends were all toxic cheaters. she finally understood why they always encouraged her to be a hoe ”

toxic cheater by Roses Olinpard May 27, 2022

Tv show cheater

A friend or s/o that secretly watches a tv/Netflix show without you present.

"You're such a Tv show cheater, we were supposed to watch that together!"

Tv show cheater by TheLightiningBoltz April 1, 2017

Beat up a cheater day 

On june 14 you have to beat up a cheater, no matter what, they cant fight back

Person: its beat up a cheater day!
Person 2: Yay i can beat up my gf for cheating on me
Person: oh... Yeah about that
Person 2: wait-

Beat up a cheater day by JadeyJadyMango December 13, 2021

Schrodinger's cheater 

a person that either have 2 or more dates or is single, and it's impossible to tell unless they met

did you heard that mike was doing out with 2 girls on the same dorm? he's such a Schrodinger's cheater

Schrodinger's cheater by KateHanami April 23, 2022

cheater 

One who obtains the source code of others and turns it in as their own.

See: Ratbert

cheater by /dev/null April 21, 2003