perspicacious Antonyms

ass-headed dim-witted gormless half-baked dopey ill-advised undiscerning stupid silly rash obtuse nutty dippy dumb as a box of rocks one sandwich short of a picnic ponky as silly as a goose unperceptive unperceiving not playing with a full deck not the sharpest tool in the shed unintelligent ill-considered feather-brained dumb as dirt nonsensical mindless foolish foolhardy fatuous dumb dull dim dense daft cuckoo crazy brainless half-witted idiotic mad lunatic irresponsible injudicious indiscreet incautious inane imprudent impolitic imperceptive