Synonyms of idiotic

idiotic

adjective

variants also idiotical

as in dumb

having or showing an inability to understand or make sensible choices

He ended up making millions from an idea that many had dismissed as idiotic.

I'm afraid I said some really idiotic things yesterday.

Related Words

• dumb
• ridiculous
• irrational
• ignorant
• unreasonable
• moronic
• unreasoning
• stupid
• thoughtless
• fatuous
• imbecile
• absurd
• simple
• clueless
• illogical
• unintelligent
• silly
• vacuous
• dopey
• obtuse
• doltish
• foolish
• brain-dead
• mindless
• witless
• thickheaded
• feebleminded
• weak
• ludicrous
• oafish
• dense
• dorky
• fallacious
• slow
• opaque
• laughable
• dunderheaded
• lamebrain
• softheaded
• invalid
• farcical
• dim-witted
• empty-headed
• unreasoned
• pinheaded
• knuckleheaded
• gormless
• dim
• dull
• chuckleheaded
• unsound
• insane
• airheaded
• nonrational
• thick
• surd
• slow-witted
• birdbrained
• crazy
• clownish
• soft
• boobish
• chowderheaded
• buffoonish
• notional
• nonsensical
• asinine
• ill-advised
• mad
• zany
• wacky
• loony
• preposterous
• daft
• unwise
• unconsidered
• inept
• brainless
• fool
• kooky
• nutty
• senseless
• simpleminded
• harebrained
• dippy
• daffy
• sappy
• weak-minded
• cuckoo
• screwball
• crackpot
• jerky
• dotty
• half-baked
• half-witted
• cockeyed
• balmy
• lunkheaded
• tomfool
• bubbleheaded
• featherheaded

Dissimilar Words

• intelligent
• clever
• reasonable
• smart
• logical
• bright
• valid
• rational
• brainy
• wise
• sensible
• sound
• sane
• prudent
• judicious
• well-advised
• sagacious
• sage
• sapient

Example Sentences

Recent Examples of idiotic

Along for the ride is his fawning, idiotic buddy Stevie (Steve Little). — Jordan Hoffman, Entertainment Weekly, 8 June 2026

Covering politics today is a grim dance between the vicious and the idiotic, between repulsion and despair. — Megan McArdle, Washington Post, 10 May 2026

Think of the costs of an idiotic war that could have covered universal childcare and college tuitions. — Sun Sentinel Editorial Board, Sun Sentinel, 8 May 2026

The biggest is Theroux’s overly tanned and idiotic tech billionaire Benji Barnes, who is dating Emily (Emily Blunt) after recently divorcing his cool wife Sasha Barnes (Lucy Liu) and leaving her with billions. — Jason P. Frank, Vulture, 4 May 2026