Words That Rhyme With "Preposterous" :
3 syllables:
boisterous, Bosporus, copperas, dolorous, esterase, phosphorous, phosphorus, prosperous, sonorous, watercress, waterless
4 syllables:
ascosporous, cistophorus, cnidophorous, Ctenophorous, Dinoceras, homopterous, homosporous, isomerous, macropterous, monoceros, monomerous, orthopterous, rhinoceros, sporophorous, unprosperous, zoophorus
5 syllables:
cholinesterase, electrophorus, galactophorous, heteromerous, heteropterous, heterosporous, hymenopterous, lepidopterous, ommatophorous, Siphonophorous