- chipper, debonair, debonaire, jaunty - having a cheerful, lively, and self-confident air; "looking chipper, like a man...diverted by his own wit"- Frances G. Patton; "life that is gay, brisk, and debonair"- H.M.Reynolds; "walked with a jaunty step"; "a jaunty optimist"
Antonyms: cheerless, uncheerful (indirect, via cheerful)