Here's what rhymes with phlegmouous.
congruous exiguous Words that almost rhyme with phlegmouous
mucous mucus lupus newness lulus chukkas houmous houmus units useless nuisance ruthless coolness eunuchs humus rudeness fluence toothless tulips blueness lewdness moonless roofless rootless bootless caduceus clueless muteness intuits juleps mullets gullets ulnas tuneups fruitless prudence mutants pursuance cubits shrewdness smoothness aloofness hubris tumults crudeness truants canoeists coolants cuteness duellists glamourous glumness sublets cutups manumits bouffants students movements foodstuffs acuteness imprudence impudence astuteness avoirdupois obtuseness scrofulous resoluteness annuitants humourless spruceness hirsuteness amusements pollutants inducements diffuseness irresoluteness improvements disputants absoluteness dissoluteness quadruplets translucence abstruseness profuseness jurisprudence persecutions