Simple past tense and past participle of expire.(verb)
That is no longer valid(adjective)
That has been breathed out(adjective)
Dead(adjective)
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Use "expired" in a sentence
"A Republican candidate Mr. Obama nominated to succeed Peter Schaumber after his term expired a year ago also hasn't been confirmed."
"Be that as it may, Mr. Gbagbo's rule was marked by a great deal of internal violence, which served as a pretext for his failure to hold a presidential election when his term expired in 2005."
"George Pataki , Ms. Shevell is the third-longest-serving current member and has remained as a holdover member since her term expired in 2010."