Here's what rhymes with kupfern.
fern turn concern learn burn stern discern tern yearn churn spurn upturn adjourn quern sauterne return overturn taciturn unconcern subaltern nocturne Words that almost rhyme with kupfern
firm therm term confirm affirm germ sperm worm terme berm perm infirm squirm corm reaffirm isotherm reconfirm wheatgerm endosperm angiosperm gymnosperm