as sharp as a needle Antonyms

screwy dotty crackers barmy around the bend zany wooden vacuous unthinking touched thick slow-witted simple-minded loopy round the bend empty-headed schizophrenic scatterbrained unintelligent certifiable short-sighted moronic mentally retarded mentally ill wooden-headed thickheaded potty dopey risible obtuse nutty dense delusional daft cuckoo crackled cracked clownish brainless bovine batty asinine absurd doltish dozy dull-witted moonstruck mindless lunatic ludicrous