| Main Entry: | |
| Part of Speech: | noun |
| Definition: | person who is crazy, mad |
| Synonyms: | crackpot, crank, cuckoo, demoniac, flake, fruitcake, kook, lamebrain, loon, maniac, neurotic, nut*, paranoid, psycho, psychopath, psychotic, scatterbrain, schizophrenic, sociopathic |
| Antonyms: | sane |
| Main Entry: | madman |
| Part of Speech: | noun |
| Definition: | lunatic |
| Synonyms: | bedlamite, crazy person, crazyman, cuckoo, deranged person, insane man, looney, maniac, nut*, nutcase, oddball, psychiatric patient, psycho*, psychopath, psychotic*, raver, screwball |