Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb expire

3 senses of expire

Sense 1
run out, expire -- (lose validity; "My passports expired last month")
       => discontinue -- (come to or be at an end; "the support from our sponsoring agency will discontinue after March 31")

Sense 2
die, decease, perish, go, exit, pass away, expire, pass, kick the bucket, cash in one's chips, buy the farm, conk, give-up the ghost, drop dead, pop off, choke, croak, snuff it -- (pass from physical life and lose all bodily attributes and functions necessary to sustain life; "She died from cancer"; "The children perished in the fire"; "The patient went peacefully"; "The old guy kicked the bucket at the age of 102")
       => change state, turn -- (undergo a transformation or a change of position or action; "We turned from Socialism to Capitalism"; "The people turned against the President when he stole the election")

Sense 3
exhale, expire, breathe out -- (expel air; "Exhale when you lift the weight")
       => breathe, take a breath, respire, suspire -- (draw air into, and expel out of, the lungs; "I can breathe better when the air is clean"; "The patient is respiring")

Antonyms of adj expired

1 sense of expired

Sense 1
expired (vs. unexpired) -- (having come to an end or become void after passage of a period of time; "an expired passport"; "caught driving with an expired license")

unexpired (vs. expired) -- (not having come to an end or been terminated by passage of time; "elected to fill the senator's unexpired term"; "an unexpired driver's license")
        => valid -- (still legally acceptable; "the license is still valid")

Similarity of adj expired

1 sense of expired

Sense 1
expired (vs. unexpired) -- (having come to an end or become void after passage of a period of time; "an expired passport"; "caught driving with an expired license")
       => invalid -- (no longer valid; "the license is invalid")
       => terminated -- ((of e.g. a contract or term of office) having come to an end)