sissy
n. countable C1 Advanced US //ˈsɪsi// UK //sˈɪsi// sis·sy
n. a weak or cowardly person, especially a boy or man who is seen as not being 'tough' enough. It is an insulting word that people use to make fun of someone for being soft or feminine.
n. a derogatory term for a person, specifically a male, perceived as weak, cowardly, or effeminate. Often used to enforce traditional gender roles through social shaming.
The older boys called him a sissy because he didn't want to fight.
He spent his childhood trying to prove he wasn't a sissy by joining every contact sport available.
Usage
Informal and derogatory; frequently used as a pejorative to mock perceived lack of courage or traditional masculinity.