Dictionary.com
definitions
  • synonyms

moron

[mawr-on, mohr-]
See more synonyms for moron on Thesaurus.com
noun
  1. Informal. a person who is notably stupid or lacking in good judgment: I wonder why they elected that narrow-minded moron to Congress.
  2. 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.
Show More

Origin of moron

1905–10, Americanism; < Greek mōrón, neuter of mōrós foolish, dull
Related formsmo·ron·ic [muh-ron-ik] /məˈrɒn ɪk/, adjectivemo·ron·i·cal·ly, adverbmo·ron·ism, mo·ron·i·ty [muh-ron-i-tee] /məˈrɒn ɪ ti/, noun

Morón

[maw-rohn; Spanish maw-rawn]
noun
  1. a city in E Argentina, SW of Buenos Aires.
Show More
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for moron

idiot, boob, nerd, fool, dummy, dunce, blockhead, dope, imbecile, loser, loony, dingbat, ignoramus, simpleton, dumbbell, dimwit, dolt, dork, halfwit, lamebrain

Examples from the Web for moron

Historical Examples of moron


British Dictionary definitions for moron

moron

noun
  1. a foolish or stupid person
  2. a person having an intelligence quotient of between 50 and 70, able to work under supervision
Show More
Derived Formsmoronic (mɒˈrɒnɪk), adjectivemoronically, adverbmoronism or moronity, noun

Word Origin for moron

C20: from Greek mōros foolish
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 moron

n.

1910, medical Latin, from Greek (Attic) moron, neuter of moros "foolish, dull, sluggish, stupid," probably cognate with Sanskrit murah "idiotic." Latin morus "foolish" is a loan-word from Greek. 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."

The feeble-minded may be divided into: (1) Those who are totally arrested before the age of three so that they show the attainment of a two-year-old child or less; these are the idiots. (2) Those so retarded that they become permanently arrested between the ages of three and seven; these are imbeciles. (3) Those so retarded that they become arrested between the ages of seven and twelve; these were formerly called feeble-minded, the same term that is applied to the whole group. We are now proposing to call them morons, this word being the Greek for "fool." The English word "fool" as formerly used describes exactly this grade of child--one who is deficient in judgment or sense. [Henry H. Goddard, in Journal of Proceedings and Addresses" of the National Education Association of the United States, July 1910]
Show More
Online Etymology Dictionary, © 2010 Douglas Harper

moron in Medicine

moron

(môrŏn′)
n.
  1. 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.
Show More
Related formsmo•ronic (mə-rŏnĭk, mô-) adj.moron′ism null n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.