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Adjective: mentally retarded
  1. Relatively slow in mental, emotional or physical development
    "providing a secure and sometimes happy life for the mentally retarded";
Noun: mentally retarded
Usage: offensive
  1. People with intellectual or developmental disabilities
    "he started a school for the mentally retarded";
    - developmentally challenged

See also: backward, cretinous, dim-witted [informal], dull-witted [archaic], feebleminded, half-witted, imbecilic [archaic], moronic [archaic, informal], simple, simple-minded, slow-witted, stupid, unintelligent

Type of: people

Encyclopedia: Mentally retarded