Here's what rhymes with proline.
line fine nine sign mine wine pine shine shrine thine dine sine vine align brine sein tine whine opine zine aline decline assign spine resign refine swine twine affine malign recline realign stein cosign design divine define alkaline benign iodine borderline incline supine atropine palatine pyridine thymine anodyne enshrine crinoline reassign confine dopamine endocrine cysteine redefine redesign thiamine underline consign exocrine monoamine porcupine saccharine anticline waterline asinine calamine entwine timberline interline crystalline undermine epinephrine turpentine serpentine centerline hyperfine imipramine recombine byzantine columbine intertwine superfine valentine eglantine celandine disincline reconsign concubine lacustrine neuroendocrine clementine tetracycline norepinephrine polycrystalline noncrystalline Words that almost rhyme with proline
lime rhyme rime time crime prime climb clime dime hym slime beim chime grime heing mime thyme chyme birdlime sauteing begrime paradigm sublime overtime lysozyme anteing maritime anytime onetime dinnertime mistime pantomime summertime suppertime mesenchyme wintertime flexitime environ