退还 (tuì huán): To return (Verb) — Meaning & Stroke Order

If the product has quality issues, the store will give you a full refund.

He did not deduct any fees but instead refunded the advance payment in full.

The refund process for shared bike deposits usually takes three to seven business days.

Although the amount he embezzled was huge, he eventually chose to turn himself in and return the illicit money.