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