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