Gay is a term that primarily refers to a homosexual person or the trait of being homosexual. . It has nevertheless been claimed that gay stands for "Good As You", but there is no evidence for this: it is a backronym created as popular etymology.
The Real Academia Española recommends the plural form gais for both the adjective and the noun, but gays is much more common.
Gay definition is - happily excited: merry. Other Words from gay Synonyms & Antonyms Choose the Right Synonym More . History and Etymology for gay.
gay (adj.) late 14c., "full of joy, merry; light-hearted, carefree;" also "wanton, lewd, lascivious" (late 12c. as a surname, Philippus de Gay), from Old French gai.