adjective
1.
= non-refundable
2.
that you cannot give back, for example to a shop / store, to be used again; that will not be given back to you :
non-returnable bottles
a non-returnable deposit
OPP returnable
adjective
1.
= non-refundable
2.
that you cannot give back, for example to a shop / store, to be used again; that will not be given back to you :
non-returnable bottles
a non-returnable deposit
OPP returnable
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005