beetle headed

adjective
Dull, stupid, obtuse, foolish, senseless, witless, insensible, sluggish, stolid, mindless, brainless, weak headed, addle headed, addle pated, blunder headed, muddle headed, beef witted, bovine, fat headed, dull brained, shallow brained, lack witted, short witted, dull witted, blunt witted, shallow pated, clod pated, thick skulled, wanting, heavy, doltish, sottish, blockish, wooden headed, dunderheaded, bull headed, slow, slow of apprehension, void of understanding.