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