or just simply use a dictionary...gay  
gay [gey] Show IPA
adjective, gay·er, gay·est.
1.
homosexual.
2.
of, indicating, or supporting homosexual interests or issues: a gay organization.
3.
having or showing a merry, lively mood: gay spirits; gay music. Synonyms: cheerful, gleeful, happy, glad, cheery, lighthearted, joyous, joyful, jovial; sunny, lively, vivacious, sparkling; chipper, playful, jaunty, sprightly, blithe. Antonyms: serious, grave, solemn, joyless; staid, sedate; unhappy, morose, grim; sad, depressed, melancholy.
4.
bright or showy: gay colors; gay ornaments. Synonyms: colorful, brilliant, vivid, intense, lustrous; glittering, theatrical, flamboyant. Antonyms: dull, drab, somber, lackluster; conservative.
5.
Slang: Often Disparaging and Offensive. awkward, stupid, or bad; lame: This game is really gay.