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Gay as a noun meaning “a (usually male) homosexual” is attested from 1971; in Middle English it meant “excellent person, noble lady, gallant knight,” also “something gay or bright; an ornament or badge” (c.1400). As a slang word meaning “bad, inferior, undesirable,” from 2000.
adj.
- Relating to or having a sexual orientation to persons of the same sex.
Descriptive term for homosexuals.