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noun

idiocy

IH-dee-uh-see
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Idiocy (noun) means Extremely foolish behavior or thinking; a stupid act. Example: “Driving home after ten drinks was pure idiocy.”

noun
1
Extremely foolish behavior or thinking; a stupid act.
"Driving home after ten drinks was pure idiocy."
"The plan collapsed under the weight of its own idiocy."

How to use idiocy

Learner’s notes

In plain EnglishBehavior or a decision so foolish it's hard to believe.

When to use it

Blunt and somewhat harsh — fine informally, but avoid it in professional or clinical contexts.

Common pairings
sheer idiocy an act of idiocy
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Word forms

Plural
idiocies
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Fill the gap

Can you complete this real example?

Driving home after ten drinks was pure _____.

Etymology

From French idiotie, from Old French idiot.

Origin: Old French

Related words

Frequently asked questions

What does “idiocy” mean?
The word “idiocy” means extremely foolish behavior or thinking; a stupid act. In plain terms, behavior or a decision so foolish it's hard to believe.
How do you pronounce “idiocy”?
“Idiocy” is pronounced IH-dee-uh-see ([ˈɪɾiəsi] in IPA).
How do you use “idiocy” in a sentence?
Here is “idiocy” used in a sentence: “Driving home after ten drinks was pure idiocy.”
What is another word for “idiocy”?
Words with a similar meaning to “idiocy” include idiocity, idiotacy, idiotcy, idioticalness, idiotery and idioticity.
What part of speech is “idiocy”?
“Idiocy” is a noun.
Where does the word “idiocy” come from?
The word “idiocy” comes from Old French. From French idiotie, from Old French idiot.

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