expired

1. 1
   adjective

   No longer valid because the period for which something applied has come to an end.

   The border agent waved her through despite the nearly expired visa.

   He couldn't return the item with an expired receipt.

   Similarlapsed, invalid, void, outdated

   Oppositevalid, current

2. 2
   verb

   Simple past and past participle of expire.

   The lease expired before the tenants found a new place.

   By the time we checked, the medication had expired.

   Note

   One spelling serves as both past tense and past participle: the lease expired, the lease had expired. Most meanings of expire are intransitive (dying, lapsing, coming to an end), so the participle normally pairs with have rather than be. A passive works only with the transitive uses, breathing out or bringing something to a close. In the milk is expired, the word is acting as the "no longer valid" adjective.

3. 3
   adjective

   No longer living; having died.

   The coroner examined the expired body for signs of trauma.

   An expired patient lay in the far bed, awaiting transfer to the morgue.

   Similardead, deceased, lifeless

   Oppositeliving

4. 4
   adjective

   Having been breathed out from the lungs, as of air or gas leaving the body.

   The device analyzes expired gas to estimate metabolic rate.

   Expired air carries less oxygen than the air we breathe in.

   Oppositeinspired

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