noun
idiocy
IH-dee-uh-see
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 notesIn 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
Word Forms
idiocies plural
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Driving home after ten drinks was pure _____.
Etymology
From French idiotie, from Old French idiot.