non-refundable
adjective /ˌnɒn rɪˈfʌndəbl/
/ˌnɑːn rɪˈfʌndəbl/
(also non-returnable)
- (of a sum of money) that cannot be returned
- a non-refundable deposit
- a non-refundable ticket (= you cannot return it and get your money back)
Oxford Collocations DictionaryNon-refundable is used with these nouns:- deposit