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"
affected with or marked by frenzy or mania uncontrolled by reason; "a frenzied attack"; "a frenzied mob"; "the prosecutor's frenzied denunciation of the accused"- H.W.Carter; "outbursts of drunken violence and manic activity and creativity"