verb (v)

• lose validity(verb.stative)

  Example:
  My passports expired last month.
  

  Synonym:
  run out
  

  source: wordnet30
• pass from physical life and lose all bodily attributes and functions necessary to sustain life(verb.change)

  Antonym:
  be born
  

  source: wordnet30
• expel air(verb.body)

  Synonym:
  breathe out, exhale
  Antonym:
  breathe in, inhale, inspire
  

  source: wordnet30
• To breathe out; to emit from the lungs; to throw out from the mouth or nostrils in the process of respiration; - - opposed to inspire.(verb)

  source: webster1913
• To emit the breath.(verb)

  source: webster1913