A man who lets his wife or girlfriend have sex with other men. Often the man lets her do whatever she wants and treat him like shit.
(Short version of cuckold)
John watched his wife get fucked by another man. What a cuck!
A man who is desperate for acceptance, approval, and affection from women. This desperation has led to the compromise of his beliefs and values, the desecration of his dignity and self-worth, and his inability to stand up for himself and what he deserves as a human being, eg. loyalty, fidelity, and honesty in a romantic relationship.
I know John's always wanted a girlfriend but since him and Mary started dating he's become a cuck. She spends all of his money and flirts openly with other men. I can tell it bothers him but he's so afraid of losing her that he doesn't say anything.
by The Cherit August 17, 2017
A cuckold, or cuck for short, is a person who finds sexual pleasure in their partner having intercourse with people that are not him.

This term can also be used as a general insult for someone that got cheated on in noun or verb (to cuck) form.
Nikola got cucked by his girlfriend of ten months.
by texeen August 22, 2019
a cuck is a husband that lets his wife fuck other people and finds enjoyment in this
wow he is such a cuck, he let me fuck his wife last night
by phantom negromante May 24, 2019
Cuck is a man who's a little bitch. Contrary to the beliefs of the liberal leaning crowd trying to explain something popularized by the conservatives, cuck is used by many races for someone who is spineless and IS derived from cuckold.
Her cuck boyfriend watched as a man flirted and felt up his girl in front of him.

She cheated on him and told him it would never happen again, he's such a cuck to believe that.
by BeardedVillain June 3, 2017
Short for cuckold

A person (usually a man) who lets others (usually women) metaphorically walk all over them in the name of "being a better person", or as a fetish.
- This guy lets misandrists shackle him with a collar like a dog because he believes that masculinity is toxic

- Wow, what a cuck
by RW250 March 29, 2017
when you let your wife or girlfriend fuck another man
Bro idubbz is being a cuck
by 696969420420 June 9, 2020