Here's what rhymes with unslumbrous.
cumbrous Words that almost rhyme with unslumbrous
wondrous lameness rumpus compass roughness buttress lustrous numbness rashness bulbous luckless pumice alumnus loveless dumbness ruckus justice circumference colourless duchess fulness fungus oneness toughness trumpets baseness bloodless dullness dulness piteous stasis stomachs encumbrance talus cutlass hummocks incumbrance smugness tapas bumptious couscous fungous magus pashas substance buckets buttocks encompass muskets sumptuous cements couplets neuritis puppets doublets justness nuggets bluntness incubus numinous buffets covets ductless abundance judgments reluctance judgements incumbents repugnance robustness abruptness hundredths unrighteousness druggists effulgence fistulous pedants bibulous erogenous consultants indulgence conductance inductance remonstrance abutments wantonness resultants rambunctious sibilants suitableness adjustments reasonableness unreasonableness agreeableness discussants overabundance readjustments superabundance overindulgence