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