adjective

1. joyous and lively; merry; happy; lighthearted
2. bright; brilliant gay colors
3. given to social life and pleasures a gay life
4. wanton; licentious a gay dog
5. ☆
   1. homosexual: now often used specif. of male homosexuals
   2. of, for, or relating to homosexuals, often, specif., male homosexuals gay liberation

Etymology: ME gai < OFr < ? Frank *gahi, swift, impetuous, akin to Ger jäh

noun