[mawr-on, mohr-]
Informal. a person who is notably stupid or lacking in good judgment: I wonder why they elected that narrow-minded moron to Congress.
Psychology. (no longer in technical use; now considered offensive) a person of borderline intelligence in a former and discarded classification of mental retardation, having an intelligence quotient of 50 to 69.

1905–10, Americanism; < Greek mōrón, neuter of mōrós foolish, dull

moronic [muh-ron-ik] , adjective
moronically, adverb
moronism, moronity [muh-ron-i-tee] , noun Unabridged


[maw-rohn; Spanish maw-rawn] ,
a city in E Argentina, SW of Buenos Aires. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
moron (ˈmɔːrɒn)
1.  a foolish or stupid person
2.  a person having an intelligence quotient of between 50 and 70, able to work under supervision
[C20: from Greek mōros foolish]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

1910, from Gk. (Attic) moron, neut. of moros "foolish, dull" (probably cognate with Skt. murah "idiotic;" L. morus "foolish" is a loan-word from Gk.). Adopted by the American Association for the Study of the Feeble-minded with a technical definition "adult with a mental age between 8 and 12;" used as
an insult since 1922 and subsequently dropped from technical use. Linnæus had introduced morisis "idiocy."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

moron mo·ron (môr'ŏn')
A person of mild mental retardation having a mental age of from 7 to 12 years and generally having communication and social skills enabling some degree of academic or vocational education. The term belongs to a classification system no longer in use and is now considered offensive.

mo·ron'ic (mə-rŏn'ĭk, mô-) adj.
mo'ron'ism or mo·ron'i·ty (mə-rŏn'ĭ-tē, mô-) n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
We should not abdicate leadership to the morons who now have control at many
The best solution is for the chair or dean to avoid putting these disruptive
  morons on search committees.
Mandatory office hours on this scale are moronic, thought up by morons who have
  never been professors.
After reading these comments there is a bunch of morons out there.
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