THESAURUS
retarded
arrested, babbling, back, backward, behind, behindhand, belated, blithering, blocked, bridled, burbling, checked, constrained, controlled, crackbrained, cracked, crazy, cretinistic, cretinous, curbed, delayed, delayed-action, detained, dithering, driveling, drooling, guarded, half-baked, half-witted, held up, hung up, idiotic, imbecile, imbecilic, impeded, in a bind, in abeyance, in check, in leading strings, in remission, inhibited, jammed, late, latish, maundering, mentally defective, mentally deficient, mentally handicapped, mentally
retarded, mongoloid, moratory, moronic, never on time, not all there, obstructed, on leash, overdue, pent-up, restrained, set back, simple, simpleminded, simpletonian, slobbering, slow, slowed down, stopped, subnormal, tardy, under control, under discipline, under restraint, unpunctual, unready, untimely