Here's what rhymes with copiren.
siren Words that almost rhyme with copiren
phylum xylem asylum tighten bison beiden titan lion fibrin widen brighten fireman firemen heighten lichen lighten ripen hyphen liken scion siphon baryon hymen prion syphon whiten cotyledon liven pinyon horizon frighten lineman linemen thriven bedizen billycan enlighten enliven linesman dicotyledon finespun veniremen funnyman aphelion dandelion monocotyledon perihelion