| opposite | (adjective) mentally healthy; free from mental disorder; "appears to be completely sane"
sane |
| similar | (adjective) frenzied as if possessed by a demon; "the soldier was completely amuck"; "berserk with grief"; "a berserk worker smashing windows"
berserk, demoniac, amok, demoniacal, possessed, amuck |
| similar | (adjective) informal or slang terms for mentally irregular; "it used to drive my husband balmy"
bats, batty, wacky, nuts, kooky, cracked, barmy, round the bend, nutty, haywire, daft, loco, crackers, balmy, loony, bonkers, loopy, buggy, around the bend, kookie, dotty, fruity, whacky |
| similar | (adjective) affected with madness or insanity; "a man who had gone mad"
sick, unhinged, demented, unbalanced, disturbed, brainsick, mad, crazy |
| similar | (adjective) fit to be certified as insane (and treated accordingly)
certifiable, certified |
| similar | (adjective) insanely irresponsible; "an idiotic idea"
crackbrained, idiotic |
| similar | (adjective) driven insane
crazed, half-crazed, deranged |
| similar | (adjective) slightly insane
touched, fey |
| similar | (adjective) suffering from a form of schizophrenia characterized by foolish mannerisms and senseless laughter along with delusions and regressive behavior
hebephrenic |
| similar | (adjective) insane and believed to be affected by the phases of the moon
moonstruck, lunatic |
| similar | (adjective) wildly disordered; "a maniacal frenzy"
maniacal, maniac |
| similar | (adjective) suffering from a disorder characterized by alternating mania and depression
manic-depressive |
| similar | (adjective) resembling the mania of manic-depressive illness
maniclike |
| similar | (adjective) suffering from severe mental illness; "of unsound mind"
mentally ill, unstable, unsound |
| similar | (adjective) not of sound mind, memory, or understanding; in law, not competent to go to trial
non compos mentis, of unsound mind |
| similar | (adjective) suffering from paranoia
paranoid |
| similar | (adjective) suffering from an undiagnosed mental disorder
psychopathologic, psychopathic, psychopathological |
| similar | (adjective) characteristic of or suffering from psychosis
psychotic |
| similar | (adjective) talking or behaving irrationally; "a raving lunatic"
raving mad, wild |
| similar | (adjective) suffering from some form of schizophrenia; "schizophrenic patients"
schizophrenic |
| similar | (adjective) not behaving normally
screwy, screw-loose |