Source : Webster's Revised Unabridged Dictionary (1913)

Manic \Man"ic\, a. [Gr. ? mad, frenzied.] (Med.)
   Of or pert. to, or characterized by, mania, or excitement.

Source : WordNet®

manic
     adj : 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" [syn: {frenzied}]