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