'Effeminize' definitions:

Definition of 'effeminize'

From: WordNet
verb
To give a (more) feminine, effeminate, or womanly quality or appearance to; "This hairdo feminizes the man" [syn: feminize, feminise, effeminize, effeminise, womanize]

Definition of 'Effeminize'

From: GCIDE
  • Effeminize \Ef*fem"i*nize\, v. t. To make effeminate. [Obs.] [1913 Webster]