something that you cannot get your money back if you return or cancel it
At this point, the purchaser will have to pay a 10% non-refundable cash deposit to the auctioneer.
The airline ticket was non-refundable due to the discounted rate.
Customers were informed that sale items were non-refundable.
The hotel policy stated that deposits were non-refundable.
Non-refundable fees are common in event registrations.