| enthusiast(noun, person, concern, interest, nut) |
| loco(adjective, slang, crazy, mad, sick) |
| screwball(noun, person, crazy, eccentric, cuckoo) |
| unsound(adjective, crazy, mad, sick, insane) |
| crazed(adjective, violent, crazy, fierce, insane) |
| frantic(adjective, violent, crazy, mad, vicious) |
| frenetic(adjective, violent, mad, vicious, fierce) |
| frenzied(adjective, violent, crazy, mad, fierce) |
| fruity(adjective, slang, mad, insane, sane) |
| madcap(noun, person, madness, insanity, psycho) |
| bigot(noun, person, crazy, radical, fanatic) |
| delirious(adjective, imbalanced) |
| distracted(hot, crazy, insane, irrational, hysterical) |
| fan(noun, person, concern, informal, nut) |
| furious(adjective, mad, vicious, unreasonable, angry) |
| hysterical(adjective, crazy, irrational, distraught, overwrought) |
| mental(adjective, insane, disturbed, irrational, unbalanced) |
| loon(noun, person, crazy, mad, patient) |
| madwoman |
| mentally ill(expression, adjective, idiom, crazy, mad) |