boneheaded Antonyms

able to understand quickly talented smart sharp scholarly sagacious resourceful rational quick-witted quick wily bright blue mentally acute extremely clever able to think quickly agile enough whip-smart quick-thinking smart as a whip knowledgeable savvy proficient piquant perceptive clever canny brilliant bright brainy astute alert agile acute educated genius nimble knowing keen inventive intuitive intelligent intellectual ingenious gifted accomplished