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