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