Here's what rhymes with perspicitis.
solicitous felicitous infelicitous Words that almost rhyme with perspicitis
gingivitis conjunctivitis tinnitus dissonance bigamous stigmatise stimulus limitless mischievous umbilicus minimised minuteness villainous epitomised vertiginous epitomise indigenous synthesis diligence vigilance wickedness antithesis cheerfulness frivolous omnipotence virulence dissidents militants silicates littleness polygamous brittleness fickleness symbolise legitimised victimised blissfulness winsomeness cheerlessness participants ridiculous ambivalence filaments ligaments meticulous stimulants synchronous articulates chivalrous sinfulness vividness fearlessness particulates peristalsis singleness listlessness sycophants wilfulness fearfulness legitimates nimbleness visitants willfulness wistfulness ambitiousness gesticulates litigiousness skillfulness fitfulness assiduousness witlessness timpanists unambiguous asynchronous predicaments religiousness precipitants shiftlessness individuates ministrants cymbalists equivalence magnificence religionists traditionalists geosynchronous grandiloquence equivocates repetitiousness nutritiousness surreptitiousness equivalents abolitionists coreligionists prohibitionists exhibitionists expeditiousness imprisonments nonparticipants coalitionists nonequivalents