Commonly called Fred. A Cuck is a progressive "man" that will change his entire personality when one woman in particular walks by. Usually part of the Incel group of people.
man 1: "I hear that Fredguy is a Cuck"
man 2: "I couldn't agree more, he's always acting up around that one girl."
Somebody who panders to self-loathing agendas in order to achieve enough guilt to be accepted into hostile Liberal environments, specifically modern SJW communities that require a hatred of anything white and anything male to join
The definitions of this word seem to have been written by cucks
Carl the cuck hates white men. Carl the cuck is a white man.
1. a weak or servile man (often used as a contemptuous term for a man with moderate or progressive political views).
2. a man whose wife is sexually unfaithful; a cuckold.
3. basically some dude who lets his girlfriend sleep around bc he doesnt have the balls to do anything about it
Joe: Hey did you knowDilan's girl been sleeping around with other dudes?
Carlos: No way! Does he know about it?
Joe: hell yeah
Carlos: What a cuck!