ingenious Antonyms

not the full shilling underdeveloped unprogressive nonprogressive moronic photocopy mentally retarded wooden-headed thickheaded boneheaded dopey empty-headed barmy wooden witless vacuous birdbrained dumb as a box of rocks dunce-like unimaginative uncreative untactful soft in the head slow on the uptake plagiaristic pig-ignorant pea-brained muttonheaded lamebrained unintelligent half-assed imbecilic dunderheaded thick thalian half-witted foolish fatuous dumb dull-witted dull dozy doltish dim dense daft cretinous crazy chuckleheaded brainless