From Wiktionary, the free dictionary
From un- + expire.
unexpire (third-person singular simple present unexpires, present participle unexpiring, simple past and past participle unexpired)
- (transitive, computing) To cause (a password or other setting) no longer to be expired; to restore as valid.
2013, Darl Kuhn, Pro Oracle Database 12c Administration, page 129:To unexpire a password, you simply need to change it.
