Here's what rhymes with oleous.
coleus Words that almost rhyme with oleous
odious copious holiness opiates erroneous loneliness cosiness coziness ghostliness mouldiness nosiness gaucheness moldiness doziness associates commodious melodious felonious unholiness folksiness defoliates harmonious dissociates opprobrious defoliants exfoliates acrimonious ceremonious incommodious parsimonious inharmonious disassociates sanctimonious unceremonious disharmonious