1. To come to an end; terminate: My membership in the club has expired. 2. To breathe one's last breath; die: The patient expired early this morning. 3. To exhale; breathe out. EXPIRED definition: to finish or run out; cease ; come to an end | Meaning, pronunciation, translations and examples in American English Learn what expired means with clear definitions, pronunciation, synonyms, and real-world examples. Simple explanations to help you use expired correctly. expired that is no longer valid that has been breathed out dead Synonyms for EXPIRED: defunct, extinct, vanished, gone, departed, done, bygone, obsolete; Antonyms of EXPIRED: existing, alive, extant, active, living, existent, dynamic, thriving The meaning of EXPIRED is dead, deceased —often used as a euphemistic or humorous alternative to dead. How to use expired in a sentence. EXPIRED definition: past participle of expire. and past tense form of expire. See examples of expired used in a sentence. EXPIRED meaning: 1. past simple and past participle of expire 2. If something that lasts for a fixed length of time…. Learn more. adjective having come to an end or become void after passage of a period of time “an expired passport” “caught driving with an expired license” synonyms: invalid EXPIRED definition: 1. past simple and past participle of expire 2. If something that lasts for a fixed length of time…. Learn more.