Definition of retardate in English:

retardate

noun

North american
offensive, dated
  • A mentally handicapped person.

    fool, idiot, cretin, moron, dolt, halfwit, ass, dunce, dullard, simpleton, nincompoop, blockhead, ignoramus, clod
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Origin

1950s: from Latin retardat- slowed down from the verb retardare (see retard).

Pronunciation:

retardate

/rəˈtärˌdāt/