Here's what rhymes with cupable.
double bubble publ addable trouble rubble stubble dirigible redouble playable attachable ignitable unplayable acquirable beatable tamable damnable friable uncharitable vocable flyable unloveable exploitable unbridgeable nonviable filtrable unnameable containable unlikable vincible dividable conformable imperturbable translatable compoundable imperishable unarguable transmutable indissoluble untranslatable indemonstrable Words that almost rhyme with cupable
puddle tuple couple subtle shuttle muddle rebuttal suppl supple huddle cuddle cudgel rappel fuddle scuttle decouple uncouple befuddle oversubtle thermocouple tunnel puzzle bustle tumble buckle chuckle jumble tional juggle tussle bumble pummel duckbill tamale tousle tubful muscle humble bundle jungle funnel muzzle shovel ductile rumble rustle shuffle stumble ductal hovel hustle knuckle muffle mussel ruffle subtile fumble mumble pustule suckle caecal runnel truffle bungle guzzle nuzzle truckle gunnel unbuckle gumball jugful tumbrel struggle fungal autumnal crumble grumble scuffle smuggle phrasal reshuffle snaffle snuggle trundle lungful rumple snuffle mugful kerfuffle pinocle frontal triumphal colourful crustal nuptial bestowal lustful peduncle carbuncle trustful crumple granduncle nonvocal cupsful conformal honeysuckle suboptimal prenuptial duodecimal prefrontal subcortical antifungal heptagonal disgruntle distrustful mistrustful