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Synonyms

inflate

American  
[in-fleyt] / ɪnˈfleɪt /

verb (used with object)

inflated, inflating
  1. to distend; swell or puff out; dilate.

    The king cobra inflates its hood.

    Antonyms:
    deflate
  2. to cause to expand or distend with air or gas.

    to inflate a balloon.

  3. to puff up with pride, satisfaction, etc.

  4. to elate.

  5. Economics. to expand (money, prices, an economy, etc.) unduly in amount, value, or size; affect with inflation.


verb (used without object)

inflated, inflating
  1. to become inflated.

  2. to increase, especially suddenly and substantially.

    The $10 subscription has inflated to $25.

inflate British  
/ ɪnˈfleɪt /

verb

  1. to expand or cause to expand by filling with gas or air

    she needed to inflate the tyres

  2. (tr) to cause to increase excessively; puff up; swell

    to inflate one's opinion of oneself

  3. (tr) to cause inflation of (prices, money, etc)

  4. (tr) to raise in spirits; elate

  5. (intr) to undergo economic inflation

"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

Related Words

See expand.

Other Word Forms

  • inflatedly adverb
  • inflatedness noun
  • inflater noun
  • inflator noun
  • overinflate verb (used with object)
  • reinflate verb

Etymology

Origin of inflate

First recorded in 1500–20; from Latin inflātus, past participle of inflāre “to blow on or into, puff out,” equivalent to in- in- 2 + flā- blow 2 + -tus past participle suffix

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Charities are urging people not to turn their heating off as the war in Iran continues to inflate energy prices.

From BBC • Mar. 26, 2026

Many insurers use credit information to determine the price of both home and auto coverage — meaning a lower score can inflate these bills, which are some of the largest in a household budget.

From MarketWatch • Mar. 4, 2026

And more importantly, he didn’t inflate it into a referendum on the character of New Yorkers.

From Slate • Feb. 28, 2026

VC built Silicon Valley, helped inflate the dot-com bubble of the ’90s, and is behind many of today’s artificial-intelligence bets.

From Barron's • Jan. 28, 2026

They just glide in, surround me, and then inflate themselves to fill the space completely and breathe my air right out of my lungs.

From "Please Ignore Vera Dietz" by A.S. King