See more synonyms for deflate on
verb (used with object), de·flat·ed, de·flat·ing.
  1. to release the air or gas from (something inflated, as a balloon): They deflated the tires slightly to allow the truck to drive under the overpass.
  2. to depress or reduce (a person or a person's ego, hopes, spirits, etc.); puncture; dash: Her rebuff thoroughly deflated me.
  3. to reduce (currency, prices, etc.) from an inflated condition; to affect with deflation.
verb (used without object), de·flat·ed, de·flat·ing.
  1. to become deflated.

Origin of deflate

1890–95; < Latin dēflātus blown off, away (past participle of dēflāre), equivalent to dē- de- + fl(āre) to blow + -ātus -ate1
Related formsde·fla·tor, nounself-de·flat·ed, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for deflating

Contemporary Examples of deflating

Historical Examples of deflating

  • Her gas escaped to mix with air, and the air of her rent balloonette poured into her deflating gas-chambers.

    The War in the Air

    Herbert George Wells

  • The best filled paunches cannot resist them; deflating little by little, they make the heaviest light.

British Dictionary definitions for deflating


  1. to collapse or cause to collapse through the release of gas
  2. (tr) to take away the self-esteem or conceit from
  3. economics to cause deflation of (an economy, the money supply, etc)
Derived Formsdeflator, noun

Word Origin for deflate

C19: from de- + (in) flate
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for deflating



1891, in reference to balloons, coinage based on inflate. Latin deflare meant "to blow away," but in the modern word the prefix is taken in the sense of "down." Related: Deflated; deflating.

Online Etymology Dictionary, © 2010 Douglas Harper