In contemporary usage, the adjective gay usually describes a person's sexual orientation, being the standard term for homosexual. In earlier usage, the word meant "carefree", "happy", or "bright and showy", though this usage is infrequent today. Gay sometimes also refers to commonalities supposedly shared by homosexual people, such as "gay history", "gay music" and "gay sensibility". The word gay is sometimes used to refer to same-sex relationships more general...

In contemporary usage, the adjective gay usually describes a person's sexual orientation, being the standard term for homosexual. In earlier usage, the word meant "carefree", "happy", or "bright and showy", though this usage is infrequent today. Gay sometimes also refers to commonalities supposedly shared by homosexual people, such as "gay history", "gay music" and "gay sensibility". The word gay is sometimes used to refer to same-sex relationships more generally, as in "gay marriage", although this usage is discouraged by some LGBT supporters: the rationale is that this usage is exclusive of not only bisexual and transgender people but also lesbians who generally reject labels of being a subset of men, even gay men. While gay applies in some contexts to all homosexual people, the term lesbian is sex-specific: it is used exclusively to describe gay women. Sometimes gay is used to refer only to men.

Outside of Western culture the concept of "gay" identity is less clearly defined and may clash with local models of sexuality.

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Because of the sin we inherited so gay people?

i think its chemicals in the brain. it also of course depends on your life experiences, eg if you're always around gay people it may make u gay as well. :-)

social and love

Because they are born that way.

And what is this talking about 'sin'? Are heterosexuals any better than gays? Why not saying that straights exist as a punishment to the gays?