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