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