idiotic synonym | Thesaurus.com

Main Entry:	idiotic
Part of Speech:	adjective
Definition:	very stupid
Synonyms:	asinine, batty, crazy, daffy, daft, dull, dumb, fatuous, foolhardy, foolish, harebrained*, imbecile, inane, insane, lunatic, moronic, senseless, silly, unintelligent, birdbrained, imbecilic, squirrelly, thick-witted
Antonyms:	brainy, intelligent, smart

* = informal/non-formal usage

Main Entry:	absurd
Part of Speech:	adjective
Definition:	ridiculous, senseless
Synonyms:	batty, crazy, daffy, flaky, foolish, goofy, idiotic, illogical, inane, incongruous, irrational, laughable, loony, ludicrous, nonsensical, nutty, off the wall, preposterous, sappy, screwy, silly, stupid, unreasonable, wacky, campy, dippy, fooling around, for grins, freaky, gagged up, jokey, joshing, tomfool
Antonyms:	certain, logical, rational, reasonable, sensible, wise

* = informal/non-formal usage

Main Entry:	asinine
Part of Speech:	adjective
Definition:	senseless
Synonyms:	absurd, daft, foolish, half-witted, idiotic, inane, moronic, silly, sophomoric, stupid, cretinous

Main Entry:	daft
Part of Speech:	adjective
Definition:	stupid; crazy
Synonyms:	absurd, asinine, bedlamite, bonkers, cracked, crackers, daffy, demented, deranged, dopey, flaky, foolish, fried, giddy, half-baked, idiotic, in the ozone, inane, insane, lunatic, mad, mental, nuts, nutty, off the wall, out of one's gourd, ridiculous, screwy, silly, simple, touched, unbalanced, unhinged, unsound, wacky, whacko, witless
Antonyms:	brainy, bright, intelligent, smart, understanding

* = informal/non-formal usage

Main Entry:	demented
Part of Speech:	adjective
Definition:	crazy, insane
Synonyms:	bananas, bemused, crackbrained, daft, delirious, deranged, distracted, distraught, flipped out, foolish, frenzied, fruity, hysterical, idiotic, in the ozone, lunatic, mad, maniac, maniacal, manic, non compos mentis, nutty as a fruitcake, out of one's gourd, out of one's tree, psycho, psychopathic, psychotic, schitzy, schizoid, unbalanced, unglued, unhinged*, unsound, whacko
Antonyms:	balanced, rational, reasonable, sane, sensible

* = informal/non-formal usage

Main Entry:	dopey
Part of Speech:	adjective
Definition:	stupid
Synonyms:	comatose, dense, dumb, foolish, heavy, idiotic, lethargic, senseless, silly, simple, slow, sluggish, thick, torpid, hebetudinous, slumberish
Antonyms:	brainy, intelligent, sensible, smart

Main Entry:	fatuous
Part of Speech:	adjective
Definition:	stupid
Synonyms:	absurd, asinine, brainless, dense, dull, foolish, idiotic, imbecile, inane, insensate, jerky, ludicrous, lunatic, mad, mindless, moronic, puerile, sappy, silly, simple, vacuous, witless, birdbrained, boneheaded, lamebrained
Antonyms:	aware, bright, intelligent, keen, sensible, smart

* = informal/non-formal usage

Main Entry:	frivolous
Part of Speech:	adjective
Definition:	trivial, silly
Synonyms:	barmy, childish, dizzy, empty-headed, facetious, featherbrained, flighty, flip, flippant, foolish, gay, giddy, harebrained, idiotic, idle, impractical, juvenile, light, minor, niggling, paltry, peripheral, petty, playful, pointless, puerile, scatterbrained, senseless, shallow, sportive, superficial, tongue-in-cheek*, unimportant, volatile, whimsical, ill-considered, light-minded, nonserious, not serious, unprofound
Antonyms:	grave, mature, sensible, serious, solemn, thoughtful, wise

* = informal/non-formal usage

Main Entry:	goofy
Part of Speech:	adjective
Definition:	silly
Synonyms:	crazy, daffy, dopey, dotty, empty-headed, flaky, foolish, idiotic, nutty, screwy, stupid, wacky*, weird, dippy, ditzy, kooky

* = informal/non-formal usage

Main Entry:	half-baked
Part of Speech:	adjective
Definition:	stupid; not thought through
Synonyms:	backward, batty, brainless, crazy, dumb, foolish, harebrained, idiotic, ignorant, impractical, indiscreet, moronic, retarded, senseless, short-sighted, silly, slow, sophomoric, underdeveloped, unformed, witless, birdbrained, blockheaded, boneheaded, feeble-minded, ill-conceived, imbecilic, poorly planned
Antonyms:	intelligent, smart, thoughtful, wise

* = informal/non-formal usage

Main Entry:	imbecile
Part of Speech:	adjective
Definition:	stupid, foolish
Synonyms:	asinine, backward, deranged, dim-witted, dull, fatuous, idiotic, inane, ludicrous, moronic, simple, slow, thick, witless, feeble-minded, imbecilic, simple-minded
Antonyms:	brainy, intelligent, smart

Main Entry:	inane
Part of Speech:	adjective
Definition:	stupid
Synonyms:	absurd, asinine, daft, empty, fatuous, flat, foolish, frivolous, futile, harebrained, idiotic, illogical, innocuous, insipid, jejune, laughable, meaningless, mindless, pointless, puerile, ridiculous, sappy, senseless, silly, trifling, unintelligent, vacant, vacuous, vain, vapid, weak, wishy-washy*, worthless, imbecilic
Notes:	inane means silly, lacking significance or insubstantial; insane means mentally deranged, mad or very foolish
Antonyms:	bright, intelligent, smart

* = informal/non-formal usage

Main Entry:	insane
Part of Speech:	adjective
Definition:	mentally ill; foolish
Synonyms:	batty, bizarre, cracked, crazed, crazy, cuckoo, daft, demented, derailed, deranged, fatuous, frenzied, idiotic, impractical, irrational, irresponsible, loony, lunatic, mad, maniacal, mental, moonstruck, nuts, nutty, of unsound mind, off one's rocker, out of one's mind, paranoid, preposterous, psychopathic, psychotic, rabid, raging, raving, schizophrenic, screwy, senseless, touched, unhinged, unsettled, wild
Antonyms:	balanced, healthy, rational, reasonable, sane, sound, well

* = informal/non-formal usage

Main Entry:	lunatic
Part of Speech:	adjective
Definition:	crazy, mad
Synonyms:	absurd, baked, balmy, bonkers, cracked, crazed, daft, demented, deranged, flaky, foolish, fried, idiotic, insane, irrational, maniac, maniacal, nonsensical, nutty, preposterous, psychotic, screwy*, stupid, unsound, zany, bananas, dippy, flipped out, freaked out, kooky, loco, psyched out, schizoid, whacko
Antonyms:	healthy, sane, sensible

* = informal/non-formal usage

Main Entry:	mindless
Part of Speech:	adjective
Definition:	oblivious, stupid; automatic
Synonyms:	asinine, careless, daydreaming, foolish, forgetful, gratuitous, heedless, idiotic, inattentive, moronic, neglectful, negligent, obtuse, out, rash, senseless, silly, simple, thoughtless, unaware, unintelligent, unmindful, unthinking, witless, brutish, imbecilic, mooning, moony, nitwitted, out of it, spaced-out
Antonyms:	intelligent, mindful, thinking, thoughtful

Main Entry:	moronic
Part of Speech:	adjective
Definition:	stupid
Synonyms:	asinine, brainless, dense, dopey, dumb, foolish, half-baked, idiotic, ill-advised, inane, irresponsible, ludicrous, mindless, nonsensical, pointless, senseless, unintelligent, unthinking, dimwitted, doltish, imbecilic

* = informal/non-formal usage

Main Entry:	oafish
Part of Speech:	adjective
Definition:	clumsy, stupid
Synonyms:	bungling, dumb, gawky, graceless, half-witted, heavy-handed, idiotic, ignorant, inelegant, inept, lumbering, lumpish, moronic, simple, simpleminded, slow, uncoordinated, ungainly, unintelligent, all thumbs, blundering, blunderous, bumbling, butterfingered, gawkish, klutzy, lubberly, stumbling, undexterous

* = informal/non-formal usage

Main Entry:	sappy
Part of Speech:	adjective
Definition:	foolish, sentimental
Synonyms:	absurd, balmy, crazy, idiotic, illogical, insane, loony, maudlin, mushy, preposterous, silly, sticky, stupid, bathetic, drippy, slushy, soppy
Antonyms:	realistic, serious

* = informal/non-formal usage

Main Entry:	senseless
Part of Speech:	adjective
Definition:	silly, meaningless
Synonyms:	absurd, asinine, batty, crazy, daft, double talk, fatuous, flaky, foolish, idiotic, illogical, inane, incongruous, inconsistent, insignificant, irrational, ludicrous, mad, mindless, moronic, nonsensical, nutty, pointless, purposeless, ridiculous, simple, stupid, trivial, unimportant, unintelligent, unreasonable, unsound, unwise, wacky*, doublespeak, imbecilic, purportless, unmeaning, without rhyme or reason
Antonyms:	feeling, intelligent, rational, reasonable, sensible, wise

* = informal/non-formal usage

Main Entry:	silly
Part of Speech:	adjective
Definition:	absurd, giddy, foolish
Synonyms:	asinine, balmy, brainless, childish, crazy, dizzy, empty, empty-headed, fatuous, featherbrained, flighty, foolhardy, frivolous, harebrained, idiotic, ignorant, illogical, immature, imprudent, inane, inappropriate, inconsistent, irrational, irresponsible, ludicrous, meaningless, nonsensical, pointless, preposterous, puerile, ridiculous, senseless, simple, simpleminded, stupid, unintelligent, unreasonable, unwise, vacuous, witless, dippy, muddle-headed, nitwitted, sheepheaded
Antonyms:	mature, mundane, practical, sensible, serious, wise