- 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) the state of being an idiot.
Origin of idiocy
SynonymsSee more synonyms on Thesaurus.com
1. foolishness, inanity, folly.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for idiocies
Idiocies multiply in direct proportion to the accumulating legal rigidities.Red Tape Is Strangling Good Samaritans
Philip K. Howard
December 27, 2014
The paralyzing standoff between the two major American parties was dramatized by the idiocies of the debt-ceiling debate.We’re Doomed!
Charles R. Morris
August 11, 2011
None of this means business needs to love government, or overlook its idiocies and inefficiencies.Will Business Kill Health Care?
June 15, 2009
When will you get rid of your idiocies, and conduct yourself like a decent woman?A Pair of Blue Eyes
Each morning he gloomily recognized his idiocies of the evening before.Babbitt
Who has not groaned over the follies and idiocies that cling to us like the doggerel verses that hang about our memories?Bunyan</p>
James Anthony Froude
- (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
Word Origin and History for idiocies
1520s, from idiot on model of prophecy, etc. Early alternatives included idiotacy (1580s), idiotry (1590s).
Online Etymology Dictionary, © 2010 Douglas Harper
- The state or condition of being an idiot; profound mental retardation.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.