Adjective
insane -
afflicted with or characteristic of mental derangement; "was declared insane" ; "insane laughter"
sane mentally healthy; free from mental disorder; "appears to be completely sane"
irrational not consistent with or using reason; "irrational fears" ; "irrational animals"
unreasonable not reasonable; not showing good judgment
amok ,
amuck ,
berserk ,
demoniac ,
demoniacal ,
possessed frenzied as if possessed by a demon; "the soldier was completely amuck" ; "berserk with grief" ; "a berserk worker smashing windows"
around the bend ,
kookie ,
loco ,
loony ,
daft ,
crackers ,
nuts ,
bonkers ,
batty ,
bats ,
round the bend ,
kooky ,
nutty ,
loopy ,
wacky ,
haywire ,
fruity ,
dotty ,
buggy ,
barmy ,
balmy ,
whacky ,
cracked having the flavor of nuts; "a nutty sherry"
brainsick ,
demented ,
unhinged ,
unbalanced ,
disturbed ,
mad ,
crazy ,
sick affected with madness or insanity; "a man who had gone mad"
certifiable ,
certified capable of being guaranteed or certified; "a certifiable fact"
crackbrained ,
idiotic insanely irresponsible; "an idiotic idea"
crazed ,
deranged ,
half-crazed driven insane
fey ,
touched slightly insane
hebephrenic suffering from a form of schizophrenia characterized by foolish mannerisms and senseless laughter along with delusions and regressive behavior
lunatic ,
moonstruck insane and believed to be affected by the phases of the moon
maniac ,
maniacal wildly disordered; "a maniacal frenzy"
manic-depressive suffering from a disorder characterized by alternating mania and depression
maniclike resembling the mania of manic-depressive illness
mentally ill ,
unsound ,
unstable suffering from severe mental illness; "of unsound mind"
non compos mentis ,
of unsound mind not of sound mind, memory, or understanding; in law, not competent to go to trial
paranoid suffering from paranoia
psychopathic ,
psychopathologic ,
psychopathological suffering from an undiagnosed mental disorder
psychotic characteristic of or suffering from psychosis
raving mad ,
wild talking or behaving irrationally; "a raving lunatic"
schizophrenic suffering from some form of schizophrenia; "schizophrenic patients"
Insane -
very foolish; "harebrained ideas" ; "took insane risks behind the wheel" ; "a completely mad scheme to build a bridge between two mountains"
harebrained ,
insane ,
mad
foolish devoid of good sense or judgment; "foolish remarks" ; "a foolish decision"
