aberrant abnormal amorphous anomalistic anomalous arrested babbling backward blithering burbling crackbrained cracked crazy cretinistic cretinous deviative different dithering divergent driveling drooling eccentric erratic formless half-baked half-witted heteroclite heteromorphic idiotic imbecile imbecilic irregular low maundering mentally defective mentally deficient mentally handicapped mentally retarded mongoloid moronic not all there retarded shapeless simple simpleminded simpletonian slobbering stray straying subpar unnatural wandering