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idiocy

[ id-ee-uh-see ]
/ ˈɪd i ə si /
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See synonyms for: idiocy / idiocies on Thesaurus.com

noun, plural id·i·o·cies.

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.

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Origin of idiocy

1520–30; idio(t) + -cy; compare Greek idiōteía uncouthness
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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British Dictionary definitions for idiocy

idiocy
/ (ˈɪdɪəsɪ) /

noun plural -cies

(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

Medical definitions for idiocy

idiocy
[ ĭdē-ə-sē ]

n.

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.
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