Here's what rhymes with quadruple.
pupil pupal duple scruple Words that almost rhyme with quadruple
brutal butyl ruble rouble bluegill feudal futile tubal noodle poodle doodle nubile boodle strudel tootle caboodle canoodle approval buccal bugle dural rueful useful fuel crucial cruel dual youthful duel jewel occlusal perusal truthful frugal accrual ducal cupful google newel crewel bejewel removal neutral refusal communal fruitful renewal tribunal tuneful untruthful scoopful disapproval unfruitful refuel monsoonal bamboozle spoonbill protrusile spoonsful synfuel premenstrual tablespoonful instinctual dessertspoonful tablespoonsful dessertspoonsful