Definition of unexpired adjective from the Oxford Advanced American Dictionary

 

unexpired

 adjective
adjective
NAmE//ˌʌnɪkˈspaɪərd//
 
[usually before noun]
 
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(of an agreement or a period of time) still valid; not yet having come to an end or expired the unexpired period of the lease
See the Oxford Advanced Learner's Dictionary entry: unexpired