- thick-headed
- adjstupid, foolish, dense, slow, brainless, obtuse, dull-witted, idiotic, imbecilic, moronic, asinine, doltish, slow-wittedCOLLOQ. dim-witted, blockheaded, dopey, thick, gormless, dumb, not all there, loopy, barmy, potty, slow on the uptake, thick as a plank/two short planks≠ clever, intelligent, sharp; colloq. brainy
Useful english dictionary. 2012.