inflate

verb

in·​flate in-ˈflāt 

inflated; inflating

transitive verb

1

: to swell or distend with air or gas

2

: to puff up : elate

inflate one's ego

3

: to expand or increase abnormally or imprudently

rapid economic growth that inflates prices

intransitive verb

: to become inflated

inflator noun

or inflater

in-ˈflā-tər 

Choose the Right Synonym for inflate

expand, amplify, swell, distend, inflate, dilate mean to increase in size or volume.

expand may apply regardless of the manner of increase (such as growth, unfolding, addition of parts).

a business that expands every year

amplify implies the extension or enlargement of something inadequate.

amplify the statement with details

swell implies gradual expansion beyond a thing's original or normal limits.

the bureaucracy swelled to unmanageable proportions

distend implies outward extension caused by pressure from within.

a distended abdomen

inflate implies expanding by introduction of air or something insubstantial and suggests a vulnerability to sudden collapse.

an inflated ego

dilate applies especially to expansion of circumference.

dilated pupils

Examples of inflate in a Sentence

We used a pump to inflate the raft.

Economists warn that rapid economic growth could inflate prices.

Increased competition has inflated salaries among professional athletes.

Rapid economic growth may cause prices to inflate.

Recent Examples on the Web

Kevin then brought it over to his neighbor’s house to ask for help inflating it. — Meredith Wilshere, PEOPLE, 12 July 2026

Rosters are dwindling, ratios are inflating and league standings are galvanizing, but there’s zero rest for the weary. — John Laghezza, New York Times, 10 July 2026

There is no meter running during surgery and no incentive to inflate the number of grafts to raise the bill. — Gretchen Wittenmyer-Stone, Miami Herald, 9 July 2026

Worsening the impacts from the supply shortage are the mandates that inflate the costs of building a new home. — Wayne Winegarden, Oc Register, 9 July 2026

Word History

Etymology

Middle English, from Latin inflatus, past participle of inflare, from in- + flare to blow — more at blow

First Known Use

15th century, in the meaning defined at transitive sense 1

Rhymes for inflate

• abate
• airfreight
• await
• baseplate
• berate
• birthdate
• birthrate
• bookplate
• borate
• breastplate
• bromate
• casemate

Kids Definition

inflate

verb

in·​flate in-ˈflāt 

inflated; inflating

1

: to swell or fill with air or gas

inflate a balloon

2

: to increase abnormally

inflated prices

inflatable

-ə-bəl

adjective

Medical Definition

inflate

verb

in·​flate in-ˈflāt 

inflated; inflating

transitive verb

: to swell or distend with air or gas

inflate the lungs

intransitive verb

: to become inflated

inflation

in-ˈflā-shən 

noun