Here's what rhymes with peritonsillitis.
situs vitas arthritis nephritis detritus gastritis thyroiditis urethritis hepatitis bronchitis dermatitis encephalitis keratitis pharyngitis meningitis cholangitis pyelonephritis stomatitis laryngitis pancreatitis osteoarthritis glomerulonephritis Words that almost rhyme with peritonsillitis
righteous unrighteous sanitise arborvitaes lightness rightness wryness crisis bias license virus minus pious sinus brightness licence likeness riots dryness lifeless thymus whiteness gyrus highness phthisis shyness tightness typhus primus sightless flightless slyness lineups slightness triteness spryness taigas science silence alliance reliance climates desirous fibrous pilots pirates impious politeness priceless timeless cypress privates guileless stylus uprightness faience hydrous vileness aliveness guiltiness niceness faultiness showiness wifeless shininess pileups snowiness clients guidance kindness blindness defiance giants triumphs appliance childless tyrants mildness mindless obeisance omniscience wildness spineless unlikeness forthrightness quiets graininess handiness misalliance impoliteness silents heists spinets contriteness playact sandiness tininess beefiness braininess cyclopes dewiness droopiness pallidness randiness dopiness windups brininess daffiness playacts titlists compliance migrants contrivance alignments anhydrous connivance homozygous indictments adenovirus excitements hydrants suppliants incitements proprietress tridents alinements crispiness assignments refinements subsidence heterozygous neuroscience unkindness retirements retrovirus enticements pseudoscience disquiets misguidance autopilots requirements acquirements concupiscence chastisements realignments colorblindness reassignments advertisements cytomegalovirus noncompliance consignments confinements advertizements