firm affirm therm term germ sperm worm terme berm perm confirm infirm reaffirm endosperm isotherm squirm corm reconfirm gymnosperm wheatgerm angiosperm

Words that almost rhyme with ectotherm

fern turn learn burn stern discern adjourn tern yearn churn spurn concern quern taciturn upturn sauterne return overturn unconcern nocturne subaltern