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: past participle of expire. and past tense form of expire. See examples of expired used in a sentence. 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 expired that is no longer valid that has been breathed out dead Synonyms for EXPIRED: defunct, extinct, vanished, gone, departed, done, bygone, obsolete; Antonyms of EXPIRED: existing, alive,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 Learn the meaning and correct usage of expired. Our guide provides clear grammar rules and real-world examples from authoritative sources to help you write with confidence. Find 111 different ways to say EXPIRED, along with antonyms, related words, and example sentences at Thesaurus.com. Definitions of expired 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. EXPIRED meaning: 1. past simple and past participle of expire 2. If something that lasts for a fixed length of time…. Learn more.