effeminate

Root : femina, meaning woman.

As Noun : having feminine qualities untypical of a man : not manly in appearance or manner

As Verb : marked by an unbecoming delicacy or overrefinement.

Synonyms : feminine, girlish, sissy, unmanly, womanish, womanlike, womanly
Antonyms : manlike, manly, mannish, masculine

Related Words : old-maidish, overnice, spinsterish; dandyish, foppish, sappy

Usage : Effeminate guys are often bullied and abused in schools (noun)
Usage : (someone please suggest verb usage)

Connotation : Often negatively used, to described homosexuality. Also used to describe feminine behaviour as a result of a medical condition.