Synonyms and related words :
beetleheaded, blockheaded, blunderheaded, boneheaded, brainless, cabbageheaded, chowderheaded, chuckleheaded, clodpated, dumbheaded, dunderheaded, fatheaded, foolish, jolterheaded, joltheaded, knuckleheaded, lunkheaded, mindless, muttonheaded, numskulled, pumpkin-headed, sapheaded, senseless, silly, stupidheaded, unwitty, weak-minded, witless, woodenheaded