Definition of retardate in English:

retardate

Syllabification: re·tar·date
Pronunciation: /rəˈtärˌdāt
 
/

noun

North American , dated or offensive
A mentally handicapped person.

Origin

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

Definition of retardate in:

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Word of the day oleaginous
Pronunciation: ˌəʊlɪˈadʒɪnəs
adjective
rich in, covered with, or producing oil; oily