Effeminacy is the embodiment of traits and/or expressions in those who are not of the female sex (e.g. boys and men) that are often associated with what is generally perceived to be feminine behaviours, mannerisms, styles, or gender roles, rather than with traditionally masculine behaviours, mannerisms, styles or roles. Effeminacy and other gender expressions are independent of a person's sexuality or sexual identity and are displayed by people of all sexualities and none. Effeminacy is seen in some societies as something embodied by some in the homosexual male community. The embodiment of effeminacy by people in some societies has resulted in prejudice, discrimination, antagonism and insults towards those who display it.
Effeminate comes from Latin effeminātus, from the factitive prefix ex- (from ex 'out') and femina 'woman'; it means 'made feminine, emasculated, weakened'. Another Latin term is mollities, meaning 'softness'.
In ancient Koine Greek, the word for effeminate is κίναιδος kinaidos (cinaedus in its Latinized form), or μαλακός malakoi: a man "whose most salient feature was a supposedly 'feminine' love of being sexually penetrated by other men"."A cinaedus is a man who cross-dresses or flirts like a girl. Indeed, the word's etymology suggests an indirect sexual act emulating a promiscuous woman. This term has been borrowed from the Greek kinaidos (which may itself have come from a language of Ionian Greeks of Asia Minor, primarily signifying a purely effeminate dancer who entertained his audiences with a tympanum or tambourine in his hand, and adopted a lascivious style, often suggestively wiggling his buttocks in such a way as to suggest anal intercourse....The primary meaning of cinaedus never died out; the term never became a dead metaphor."Other vernacular words for effeminacy include: pansy, nelly, pretty boy, nancy boy, girly boy, molly, sissy, pussy, tomgirl, femboy, roseboy, baby, and girl (when applied to a boy or, especially, adult man).