Here's what rhymes with portentos.
mementos mementoes Words that almost rhyme with portentos
tempos pimentos innuendoes crescendos innuendos decrescendos diminuendos diminuendoes bellows ghettos demos cellos ghettoes bordellos stenos fellows meadows narrows sparrows memos yellows gemstones librettos pharaohs geckos marrows metros mellows palmettos palmettoes farrows falsettos mezzos retros frescoes concertos frescos headphones headstones stilettos allegros flamencos hellholes stilettoes allegrettos electrodes playfellows sombreros envenoms centrefolds thresholds schoolfellows intermezzos violoncellos