Madman

n.

1.

A man who is mad; lunatic; a crazy person. When a man mistakes his thoughts for person and things, he is mad. A madman is properly so defined. - Coleridge.

Noun

1.

madman - an insane person Synonyms: lunatic, maniac

aliene, ass, bedlamite, borderline case, crackbrain, crackpot, dement, demoniac, donkey, energumen, fanatic, flake, fou, idiot, imbecile, jackass, jerk, kook, loon, loony, lunatic, maniac, meshuggenah, nincompoop, ninny, non compos, noncompos, nut, phrenetic, psycho, psychopath, psychotic, raving lunatic, screwball, weirdo