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