Here's what rhymes with compoundable.
double bubble publ trouble rubble stubble playable addable damnable uncharitable dirigible redouble unbridgeable unplayable beatable tamable friable attachable unnameable vocable containable ignitable acquirable flyable vincible dividable conformable imperturbable nonviable filtrable unlikable unloveable imperishable exploitable translatable untranslatable unarguable indissoluble indemonstrable transmutable Words that almost rhyme with compoundable
puddle tuple couple subtle shuttle muddle suppl supple huddle cuddle cudgel rappel fuddle rebuttal scuttle decouple uncouple befuddle thermocouple oversubtle 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 bestowal grumble scuffle smuggle phrasal snaffle snuggle trundle lungful rumple snuffle mugful pinocle frontal triumphal colourful crustal nuptial lustful peduncle trustful crumple reshuffle nonvocal kerfuffle cupsful antifungal conformal honeysuckle suboptimal carbuncle prenuptial duodecimal granduncle prefrontal subcortical distrustful mistrustful heptagonal disgruntle