(idiomatic, euphemistic) An inoffensive adult male who desires romantic companionship but who is too bland and uninspiring to be attractive.

(informal) A hero, particularly a protagonist in a story. / (informal) An all-around pleasant person; usually a man.

(informal) A trusted or dependable person for a particular matter

(slang) Synonym of pizza man (pizza delivery guy)

plural of guy-wire

A term of endearment, usually addressed toward an all-around good male person. / (countable) Used other than figuratively or idiomatically: see big, guy.

(idiomatic) To a reasonable degree; as much as a typical person or man.

(military slang, dated) A Vietnamese man, particularly in the Vietnam War. / An underdog.

(Internet, informal, derogatory) To reply to a social media post as a reply guy.

(Internet, informal, derogatory) A male commenter who leaves frequent and inappropriate replies on a woman's social media posts.