Synonyms and related words :
beetleheaded, blockheaded, blunderheaded, boneheaded, cabbageheaded, chowderheaded, chuckleheaded, clodpated, dumbheaded, dunderheaded, fatheaded, jolterheaded, joltheaded, knuckleheaded, lunkheaded, nitwitted, numskulled, pumpkin-headed, sapheaded, stupidheaded, woodenheaded