sissy
sis-sy
noun
A boy or man considered effeminate, weak, or cowardly.
"Don't be such a sissy, just jump in!"
adjective
Describing a boy or man as effeminate, weak, or cowardly.
"He was called sissy for not fighting back."
Thesaurus
Synonyms: Milquetoast, milksop, pansy, pantywaist, cissy, unmanful, unmanlike, effeminate, unmanly, emasculate, sissyish, sissified