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