THESAURUS
blockheaded
beetleheaded, blockish, blunderheaded, boneheaded, cabbageheaded, chowderheaded, chuckleheaded, clodpated, dumbheaded, dunderheaded, fatheaded, jolterheaded, joltheaded, knuckleheaded, lunkheaded, muttonheaded, nitwitted, numskulled, pumpkin-headed, sapheaded, stupid, stupidheaded, thick, thickheaded, woodenheaded