mentally retarded

from WordNet (r) 3.0 (2006)

mentally retarded
    n 1: people collectively who are mentally retarded; "he started
         a school for the retarded" [syn: {mentally retarded},
         {retarded}, {developmentally challenged}]

from The Collaborative International Dictionary of English v.0.48

Retarded \Re*tard"ed\, n.
   having a limited or below normal mental ability; same as

   {mentally retarded}; -- used especially in relation to
      performance in academic tasks.
      [PJC]

from Moby Thesaurus II by Grady Ward, 1.0

31 Moby Thesaurus words for "mentally retarded":
      arrested, babbling, backward, blithering, burbling, crackbrained,
      cracked, crazy, cretinistic, cretinous, dithering, driveling,
      drooling, half-baked, half-witted, idiotic, imbecile, imbecilic,
      maundering, mentally defective, mentally deficient,
      mentally handicapped, mongoloid, moronic, not all there, retarded,
      simple, simpleminded, simpletonian, slobbering, subnormal

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