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