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See also: déflaté and déflate



de- +‎ (in)flate. Coined in 1891, in reference to balloons. Partly based on Latin deflo, deflare (perfect passive participle deflatus), which meant "blow away".


  • (UK) IPA(key): /diːˈfleɪt/
  • (file)
  • Rhymes: -eɪt


A deflated balloon.

deflate (third-person singular simple present deflates, present participle deflating, simple past and past participle deflated)

  1. (transitive) To remove air or some other gas from within an elastic container, e.g. a balloon or tyre
  2. (transitive) To cause an object to decrease or become smaller in some parameter, e.g. to shrink
  3. (transitive, economics) To reduce the amount of available currency or credit and thus lower prices.
  4. (intransitive) To become deflated.
  5. (transitive) To let down or disappoint.
    deflate someone's ego
  6. (transitive, computing) To compress (data) according to a particular algorithm.
    • 2003, "Alan D Johnson", unzip utility on HPUX (on newsgroup comp.sys.hp.hpux)
      Never had a problem, guess I've never had to deflate multiple files!


Derived terms[edit]