Words That Rhyme With "Expeditiousness" :

3 syllables:

viciousness

4 syllables:

ambitiousness, auspiciousness, capriciousness, deliciousness, factitiousness, fictitiousness, flagitiousness, judiciousness, maliciousness, nutritiousness, officiousness, perniciousness, propitiousness, seditiousness, suspiciousness

5 syllables:

adventitiousness, avariciousness, inauspiciousness, injudiciousness, repetitiousness, unpropitiousness