"Effeminatize" is a rare word that means to make something or someone more feminine or effeminate. While it may not be a common word, there are several synonyms that can be used in its place. These include "feminize," "emasculate," and "womanize." "Feminize" means to make something more feminine in nature, while "emasculate" means to weaken or deprive of strength or vigor. "Womanize" suggests making someone or something more like a woman in character or behavior. Other synonyms that can be used in place of "effeminatize" include "soften," "weaken," and "delicatize".