Here's what rhymes with serious.
mysterious imperious delirious deleterious Words that almost rhyme with serious
bilious supercilious cafeterias punctilious paterfamilias patresfamilias hideous vitreous igneous weariness idiots ligneous itchiness tibias dizziness insidious amphibious invidious pitiless giddiness lascivious silliness stickiness filthiness silkiness bitchiness pithiness wittiness skinniness hilliness tinniness bleariness experience affiliates initiates oblivious fastidious chilliness prettiness riskiness flimsiness grittiness milkiness percipience trickiness incipience tipsiness friskiness prissiness skimpiness recipients resilience lineaments miscreants ignominious inexperience consanguineous conciliates propitiates princeliness disaffiliates