Here's what rhymes with knuckleheaded.
headed threaded wedded shredded bareheaded lightheaded Words that almost rhyme with knuckleheaded
fetid setup petted foetid credit ketchup accredit catsup indebted discredit intrepid curettage second method tended offended vested ascended herald legged reddened deadened meddled peddled felted hefted melded pedaled affected attended collected settled arrested effected splendid tested amended defended descended melted reckoned rested blended lessened rented resented leveled levelled nested beckoned nestled speckled wrestled belted beveled freckled revelled sectioned smelted bevelled chested deafened emended freshened leavened reveled subtended tented presented connected directed extended intended mentioned selected elected reflected threatened assembled depended erected infected invented invested legend neglected oriented suspended corrected manifested objected pretended tempted welcomed apprehended augmented contented contested perfected resembled cemented congested dissected infested lengthened unsettled crested fermented breasted disheveled dishevelled resettled nettled penciled pencilled pensioned semiarid undefended expected suggested attempted protected recommended detected projected questioned suspected injected protested strengthened trembled ingested condescended inflected reassembled reelected trebled complexioned dissembled embezzled imperiled millisecond unmentioned represented documented supplemented unquestioned predestined overextended implemented intercepted disinfected superintended disassembled