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Roget category 503

4. Words relating to the intellectual faculties
4.5. Results of reasoning

#503. Insanity


disordered reason, disordered intellectdiseased mind, unsound mind, abnormal mindderangement, unsoundnesspsychosisneurosiscognitive disorderaffective disorder.
insanity, lunacymadness etc. adj. — mania, rabies, furor, mental alienation, aberrationparanoia, schizophreniadementation, dementia, demencyphrenitis, phrensy, frenzy, raving, incoherence, wandering, delirium, calenture of the braindelusion, hallucination lycanthropybrain storm.
vertigo, dizziness, swimmingsunstroke, coup de soleil [Fr.], siriasis.
fanaticism, infatuation, crazeoddity, eccentricity, twist, monomania (caprice) 608kleptodipsomaniahypochondriasis [Med.] etc. (low spirits) 837melancholia, depression, clinical depression, severe depressionhysteriaamentia.
screw loose, tile loose, slate loosebee in one's bonnet, rats in the upper story.
dotage etc. (imbecility) 499.


be insane etc. adj.. become insane etc. adj. — lose one's senses, lose one's reason, lose one's faculties, lose one's wits go mad, run mad, lose one's marbles [Coll.], go crazy, go bonkers [Coll.], flip one's wig [Coll.], flip one's lid [Coll.], flip out [Coll.], flip one's bush [Coll.].
rave, dote, ramble, wanderdrivel etc. (be imbecile) 499have a screw loose etc. n., have a devilavoir le diable au corps [Fr.]lose one's head etc. (be uncertain) 475.
render mad, drive mad etc. adj. — madden, dementate, addle the wits, addle the brain, derange the head, infatuate, befoolturn the brain, turn one's headdrive one nuts [Coll.].


insane, mad, lunatic, loony [Coll.]crazy, crazed, aliene, non compos mentisnot right, cracked, touchedbereft of reasonall possessed, unhinged, unsettled in one's mindinsensate, reasonless, beside oneself, demented, daftphrenzied, frenzied, freneticpossessed, possessed with a devilderanged, maddened, moonstruckshatterpatedmad-brained, scatter brained, shatter brained, crackbrainedtouched, tetched [Coll.]off one's head.
[behavior suggesting insanity] maniacaldelirious, lightheaded, incoherent, rambling, doting, wanderingfrantic, raving, stark staring mad, stark raving mad, wild-eyed, berserkdelusional, hallucinatory.
[behavior somewhat resembling insanity] corybantic, dithyrambic rabid, giddy, vertiginous, wildhaggard, mazedflightydistracted, distraughtdepressedagitated, hyped upbewildered etc. (uncertain) 475.
mad as a March hare, mad as a hatterof unsound mind etc. n. — touched in one's head, wrong in one's head, not right in one's head, not in one's right mind, not right in one's wits, upper storyout of one's mind, out of one's wits, out of one's skull [Coll.], far gone, out of one's senses, out of one's witsnot in one's right mind.
fanatical, infatuated, odd, eccentrichypped, hyppishspaced out [Coll.].
imbecile, silly, etc. 499.


like one possessed.


the mind having lost its balancethe reason under a cloudtet exaltee [Fr.], tet montee [Fr.]ira furor brevis est [Lat.]omnes stultos insanire [Lat.] [Horace].

The content on this page comes straight from Project Gutenberg Etext of Roget's Thesaurus No. Two, which consists of the acclaimed work by Peter Mark Roget augmented with more recent material. Some changes where made to the formatting for improved readability.

Bold numbers signify related Roget categories. A dagger symbol (†) indicates archaic words and expressions no longer in common use.

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