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