Definition of deflate verb from the Oxford Advanced American Dictionary

     

    deflate

     verb
    verbVerb Forms present simple I / you / we / they deflate
     
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    he / she / it deflates
     
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    past simple deflated
     
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    -ing form deflating
     
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  1. 1
    NAmE//dɪˈfleɪt//
     
    , NAmE//ˌdiˈfleɪt//
     
    [transitive, intransitive] deflate (something) to let air or gas out of a tire, balloon, etc.; to become smaller because of air or gas coming out
  2. 2
    NAmE//dɪˈfleɪt//
     
    [transitive, often passive] deflate somebody/something to make someone feel less confident; to make someone or something feel or seem less important All the criticism had left her feeling totally deflated.
  3. 3 [transitive] deflate something (economics) to reduce the amount of money being used in a country so that prices fall or stay steady compare inflate, reflate
See the Oxford Advanced Learner's Dictionary entry: deflate