Here's what rhymes with polypropylene.
lean lien propylene baleen seen mean green scene clean gene keen bean bien dean eine saline heen teen amine cn mien sheen agin beene bein feen glean hsien keine mein peine wean chine ween jean preen aubergine peen colleen ursine machine screen eighteen marine queen routine serene spleen unseen caffeine ethylene obscene ravine unclean adenine alanine aniline hyaline tween latrine libertine purine rapine xylene demean overseen sardine scalene trampoline tureen careen beguine gamine praline subteen between fourteen thirteen foreseen gasoline intervene vaccine benzene evergreen acetylene ancien canteen casein cesarean convene cosine gelatine olivine codeine limousine riverine aquiline onscreen supervene tourmaline gasolene neoprene peregrine woodbine gabardine preteen sateen sibylline umpteen touchscreen vitrine fifteen magazine nineteen submarine adenosine histamine kerosene nicotine polyethylene unforeseen carotene cuisine glutamine guillotine histidine methylene creatine cytosine figurine hetween naphthalene theophylline mezzanine sunscreen tambourine caesarean cocain melamine mescaline reconvene tangerine wintergreen wolverine astatine houseclean sixteen seventeen quarantine amphetamine clonidine internecine oncogene pyrimidine thymidine brigantine contravene philistine ultramarine windscreen aquamarine mujahideen velveteen euclidean nectarine silkscreen brilliantine grenadine calcimine subroutine chlorpromazine cyclosporine quinidine oxyacetylene antipodean catecholamine phenylalanine antisubmarine incarnadine Words that almost rhyme with polypropylene
leam ream seem cm dream team theme beam cream passim deem gleam seam diem feem bream creme teem haem agleam regime scheme steam stream esteem supreme redeem scream abeam beseem upstream academe inseam extreme downstream systeme crossbeam disesteem slipstream selfesteem