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