To deflate is to reduce the size or amount of something. When you deflate a balloon, you make it less inflated.

  • The balloon was deflated by the wind.

  • The company's stock prices have been deflating for the last few years.

Definition of deflate


reduce or lessen the size or importance of




become deflated or flaccid, as by losing air


collapse by releasing contained air or gas


produce deflation in


reduce or cut back the amount or availability of, creating a decline in value or prices


release contained air or gas from

Nearby Words

deflate Pronunciation in a video

Example Sentences for deflate

  • 1

    The ball deflated suddenly.

  • 2

    The men deflated the balloon.

  • 3

    The world was gripped by deflation.

  • 4

    It is inflated in May and deflated in the fall.

  • 5

    Deflation started in the early 1990s.

  • 6

    To deflate the lungs, the process is reversed.

  • 7

    I was excited, deflated, excited, and then blase.

  • 8

    The gap was filled by deflation of consumer prices.

  • 9

    The play was incredible and seemed to deflate Pittsburgh.

  • 10

    Sometimes deflation also occurs as part of the correction.