nice guys

Noun

nice guy (plural nice guys)

1. (euphemistic, idiomatic) An inoffensive adult male who desires romantic companionship but who is too bland and uninspiring to be attractive.
   • The nice guy, they say, finishes last. But in romantic relationships, the nice guy often isn't even in the running. […] The nice guy may have expressed an interest in dating you…. The nice guy is the person who you trust and feel comfortable with, but don't see as "fun" or "challenging" or really...1999, The 'Nice Guy' Syndrome, Self-Help Informational Resources, The Counseling Center for Human Development, The University of South Florida...
2. (Internet, derogatory, sarcastic) A man who pretends to be kind and polite with the goal of attracting women, often becoming hostile and misogynistic when their advances are rebuffed; someone affected by nice guy syndrome.
   • Plenty of men will treat women kindly, but Nice Guys like to think that behaving kindly earns them a gold star. It doesn't.2016 March 12, Suzannah Weiss, “5 Signs Of Nice Guy Syndrome”, in Bustle
3. Used other than figuratively or idiomatically: see nice, guy.