autodidactic Antonyms

dumb unenlightening most stupid as dumb as a bag of hammers as dumb as a box of rocks as dumb as a post as dumb as a sack of hammers as dumb as an ox as thick as a brick soft in the head uninformative idiotic imbecile stupid uneducated dumb as a bag of hammers dumb as a box of rocks dumb as dirt feather-brained not very quick