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Definition of moron

moron

/ˈmɔːr.ɑːn/
mo · ron

Adverb:moronically
•
Plural:morons
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Adjective:moronic
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moron Lexical Profile

moron Game Scores & Validity

• noun

1

A very foolish, stupid, or senseless person (used informally as a derogatory term).

Example

"He felt like a complete moron after realizing he had locked his keys inside the running car."


2

In obsolete early 20th-century psychological classification, an adult with a mild intellectual disability, ranked above an imbecile and below average intelligence (associated with a mental age of 8 to 12 years or an IQ of 50 to 69).

Example

"Early twentieth-century psychometric scales categorized patients using clinical labels such as moron, imbecile, and idiot that have long since been abandoned by modern medicine."

Synonyms
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Antonyms
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Word Nuance & Usage

Originally introduced in 1910 as a clinical psychology term for mild intellectual disability, 'moron' is now entirely obsolete in medical contexts and functions exclusively as an informal, derogatory insult.

• Rhymes for moron

Word Origin & Etymology

Coined in 1910 by American psychologist Henry H. Goddard from the Ancient Greek 'moron', the neuter form of 'moros', meaning 'foolish', 'dull', or 'sluggish'.

Cite this Entry


Wordmom. (2026). Definition of Moron. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/moron
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