utterly senseless or foolish behavior; a stupid or foolish act, statement, etc.: All this talk of zombies coming to attack us is pure idiocy.
Psychology. (no longer in technical use; considered offensive) an intellectual disability, previously classified in a now obsolete rubric of developmental disorders as having a mental age of less than three years old and an intelligence quotient under 25.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use idiocy in a sentence
Idiocies multiply in direct proportion to the accumulating legal rigidities.
The paralyzing standoff between the two major American parties was dramatized by the idiocies of the debt-ceiling debate.
None of this means business needs to love government, or overlook its idiocies and inefficiencies.
The expulsion of the princes belongs to the same category of political idiocies with the pacte de famine.France and the Republic | William Henry Hurlbert
Who has not groaned over the follies and idiocies that cling to us like the doggerel verses that hang about our memories?Bunyan | James Anthony Froude
He remained in a state of coma while the rest of the committee laughed over the familiar idiocies and debated a verdict.In a Little Town | Rupert Hughes
On the stage in the room beyond, a fat woman, dressed in green and gauze, was singing faded idiocies.The Paliser case | Edgar Saltus
And this is the result of half-a-dozen idiocies of Miss Abbott?Where Angels Fear to Tread | E. M. Forster
British Dictionary definitions for idiocy
(not in technical usage) severe mental retardation
foolishness or senselessness; stupidity
a foolish act or remark
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012