1. Relatively slow in mental or emotional or physical development
   "providing a secure and sometimes happy life for the retarded"

1. People collectively who are mentally retarded
   "he started a school for the retarded"
   - mentally retarded, developmentally challenged

1. Cause to move more slowly or operate at a slower rate
   "This drug will retard your heart rate" 
2. Be delayed 
3. Slow the growth or development of
   "The brain damage will retard the child's language development"
   - check, delay 
4. Lose velocity; move more slowly
   - decelerate, slow, slow down, slow up

See also: backward, cretinous, delayed, dim-witted, feebleminded, half-witted, idiotic, imbecile, imbecilic, moronic, retardation, simple, simple-minded, slow-witted, stupid, unintelligent

Type of: alter, be, change, decelerate, decrease, diminish, fall, lessen, modify, people, slow down

Antonym: precocious

Encyclopedia: Retard

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