Thesaurus
Synonyms & Antonyms of insane
- only an insane person would intentionally jump off a skyscraper
Synonyms for insane
- balmy,
- barmy
- [chiefly British],
- bats,
- batty,
- bedlam,
- bonkers,
- brainsick,
- bughouse
- [slang],
- certifiable,
- crackbrained,
- cracked,
- crackers,
- crackpot,
- cranky
- [dialect],
- crazed,
- crazy,
- cuckoo,
- daffy,
- daft,
- demented,
- deranged,
- fruity
- [slang],
- gaga,
- haywire,
- kooky
- (also kookie),
- loco
- [slang],
- loony
- (also looney),
- loony tunes
- (or looney tunes),
- lunatic,
- mad,
- maniacal
- (also maniac),
- mental,
- meshuga
- (or meshugge also meshugah or meshuggah),
- moonstruck,
- non compos mentis,
- nuts,
- nutty,
- psycho,
- psychotic,
- scatty
- [chiefly British],
- screwy,
- unbalanced,
- unhinged,
- unsound,
- wacko
- (also whacko),
- wacky
- (also whacky),
- wud
- [chiefly Scottish]
Words Related to insane
- aberrant,
- delirious,
- delusional,
- delusionary,
- disordered,
- disturbed,
- neurotic,
- obsessive-compulsive,
- paranoiac
- (also paranoic),
- paranoid
- (also paranoidal),
- schizoid,
- schizophrenic,
- sociopathic
- distracted,
- distraught,
- frantic,
- frenzied,
- hysterical
- (also hysteric),
- raving,
- wigged-out
Phrases Synonymous with insane
Near Antonyms for insane
Antonyms for insane
- a completely insane plan to build an opera house in the middle of nowhere
Synonyms for insane
- absurd,
- bizarre,
- crazy,
- fanciful,
- fantastic
- (also fantastical),
- foolish,
- nonsensical,
- preposterous,
- unreal,
- wild
Words Related to insane
Phrases Synonymous with insane
- off the wall
- [slang]
Antonyms for insane
- an insane plan to blow all of their savings on lottery tickets
Synonyms for insane
- absurd,
- asinine,
- balmy,
- brainless,
- bubbleheaded,
- cockeyed,
- crackpot,
- crazy,
- cuckoo,
- daffy,
- daft,
- dippy,
- dotty,
- fatuous,
- featherheaded,
- fool,
- foolish,
- half-baked,
- half-witted,
- harebrained,
- inept,
- jerky,
- kooky
- (also kookie),
- loony
- (also looney),
- lunatic,
- lunkheaded,
- mad,
- nonsensical,
- nutty,
- preposterous,
- sappy,
- screwball,
- senseless,
- silly,
- simpleminded,
- stupid,
- tomfool,
- unwise,
- wacky
- (also whacky),
- weak-minded,
- witless,
- zany
Words Related to insane
- airheaded,
- birdbrained,
- boobish,
- brain-dead,
- chowderheaded,
- chuckleheaded,
- clueless,
- dense,
- dim,
- dim-witted,
- doltish,
- dopey
- (also dopy),
- dorky
- [slang],
- dull,
- dumb,
- dunderheaded,
- empty-headed,
- feebleminded,
- gormless
- [chiefly British],
- idiotic
- (also idiotical),
- imbecile
- (or imbecilic),
- knuckleheaded,
- lamebrain
- (or lamebrained),
- mindless,
- moronic,
- oafish,
- obtuse,
- opaque,
- pinheaded,
- simple,
- slow,
- slow-witted,
- soft,
- softheaded,
- thoughtless,
- thick,
- thickheaded,
- unintelligent,
- vacuous
Phrases Synonymous with insane
Near Antonyms for insane
Antonyms for insane
- wanted an insane amount of money to paint our house
Synonyms for insane
Words Related to insane
Phrases Synonymous with insane
Near Antonyms for insane
Antonyms for insane
Learn More About insane
Cite this Entry
“Insane.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insane. Accessed 24 May. 2022.
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Time Traveler for insane
The first known use of insane was in 1575
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