Here's what rhymes with aphthous.
vows hows thous cows arouse bows boughs avows dhows scows cowers mows wows chows loughs taus allows brows browse espouse ploughs plows carouse prows drowse haymows endows disavows hedgerows snowploughs menopause windrows cornrows prognathous Words that almost rhyme with aphthous
house south mouth mouse spouse rouse louse douse louche dowse pouffe blouse grouse drouth firehouse coffeehouse powerhouse boathouse summerhouse slaughterhouse packinghouse meetinghouse cottonmouth porterhouse boardinghouse clearinghouse fowls howls fouls sourdoughs sounds towns mouths nouns downs gowns hounds founds frowns shrouds jowls scowls bauds cowls dowers yowls zounds pounds clouds bounds crowds crowns mounds rounds surrounds clowns lbs browns drowns growls prowls befouls grounds abounds southwards resounds astounds enshrouds newshounds confounds expounds nightgowns redounds beclouds eiderdowns impounds inbounds wolfhounds ballgowns overclouds rubdowns waterfowls overcrowds dumfounds wildfowls foregrounds propounds shantytowns turnarounds ultrasounds runarounds wraparounds thunderclouds battlegrounds