Here's what rhymes with peritovenous.
venous genus keenness spinous rosiness boniness furriness paleness resinous saphenous dirtiness libidinous messiness parvenus cheeriness noisiness eeriness phoniness sauciness stoniness blurriness chanciness fieriness sorriness savouriness podginess ferruginous maleness heartiness loftiness hugeness meagreness mistiness staleness shiftiness artiness cattiness merriness fanciness snootiness thorniness waxiness fleeciness leeriness nippiness intravenous arteriovenous femaleness slipperiness thriftiness sombreness extremeness corniness hungriness severeness sportiness multitudinous platitudinous orneriness pulchritudinous Words that almost rhyme with peritovenous
zenith arenas hyenas hyaenas subpoenas behemoth marinas verbenas patinas czarinas tsarinas ballerinas ocarinas sonatinas concertinas thesis fetus heelless zebus zeniths sheilas genius weakness sweetness cheapness heedless meanness meatus meekness neatness osseous peanuts rhesus seamless specious nevus rebus steepness viscus fleetness seedless deepness sleekness pitas sereneness sequence secrets treatise needless grievous speechless covetous sleepless facetious leafless paribus prius trapezius treeless acacias bleakness greenness sealants silicious teacups theists adieus betakes lenience meatless beechnuts briefness cleanups obliqueness speedups tubeless yeshivas weedless prenups allegiance ingenious grievance pretence uniqueness credence leaflets reflux priestess capitis egregious regents dreamless decedents discreteness panaceas behemoths sapience telekinesis discreetness urethras repleteness genteelness wapitis convenience completeness impedance calcareous concreteness frequents malfeasance myelitis sentience misfeasance nacreous candidness martinets achievements treatments heterogeneous antecedents incompleteness bereavements senoritas appeasements infrequence agreements inconvenience mendicants impeachments margaritas orthopedists psychokinesis insentience orthopaedists disagreements extremists osteomyelitis poliomyelitis enjambements