knuckleheaded

POS

Adjective

HYPHEN

knuck=le=head=ed

top

THESAURUS

knuckleheaded

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

For further exploring for "knuckleheaded" in Webster Dictionary Online