Synonyms of idiocy

idiocy

noun

ˈi-dē-ə-sē 

as in insanity

a foolish act or idea

trying to get that many people to agree on anything was pure idiocy

Synonyms & Similar Words

• insanity
• absurdity
• stupidity
• madness
• inanity
• imbecility
• bêtise
• lunacy
• foppery
• asininity
• folly
• foolery
• fatuity
• craziness
• absurdness
• blunder
• buffoonery
• tomfoolery
• foolishness
• nonsense
• witlessness
• twaddle
• senselessness
• inaneness
• shenanigan(s)
• drivel
• monkeyshine(s)
• bungle
• flub
• goof
• howler
• humbug

Antonyms & Near Antonyms

• wisdom
• discretion
• prudence
• sagacity
• forethought
• inspiration
• brainstorm

Example Sentences

Recent Examples of idiocy

There’s a heartwarming idiocy to their pursuit, yet what festers underneath is their inability to process grief consciously and the fear that those who deem their existence meaningless might be right. — Carlos Aguilar, Variety, 14 Mar. 2026

Gunther and Tig are two billionaire failsons who have wasted countless opportunities and cash chasing the stupidest ideas and who get rewarded over and over again for their idiocy. — Roxana Hadadi, Vulture, 10 Mar. 2026

Unlike its sibling concepts of dumbness and idiocy, stupidity isn’t really a personality trait. — Jonny Thomson, Big Think, 11 Feb. 2026

Harry and Finis refused to play Jack Donahoe’s game of commenting on every idiocy that came across their desks. — Literary Hub, 27 Jan. 2026