Mongolian idiocy

See more synonyms for Mongolian idiocy on Thesaurus.com

noun (often lowercase) Pathology.

(no longer in technical use) Down syndrome.

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Origin of Mongolian idiocy

First recorded in 1890–95

Related formsMongolian idiot, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018