effeminate

Short definition from Wiktionary

Adjective

1. 1
   Exhibiting behaviour or mannerisms considered typical of a woman; unmasculine.
2. 2
   Womanly; tender, affectionate, caring.

Verb

1. 1
   To make womanly; to unman.
2. 2
   To become womanly.

Noun

1. 1
   An effeminate person.