refund

v.退款

reformer, reformulate, refract, refraction, refractory, refrain, refrain from, refresh, refresher course, refreshing, refreshment, refrigerant, refrigerate, refrigeration, refrigerator, refuel, refuge, refugee, refulgence, refulgent, refundable, refurbish, refusal, refuse, refuse collector, refuse to do, refutable, refutation, refute, regain, regal, regale, regalia, regally, regard, regard...as, regarding, regardless, regardless of, regatta,