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