English Reference

Word

inflate

Phoneticsin·flate, stress on the second syllable

US/ɪnˈfɫeɪt/

UK/ɪnflˈeɪt/

Definitions

01to fill with air

B2 · Upper Intermediate

v. to fill an object with air or gas so that it becomes larger and firmer.

v. to distend or expand an object by injecting air or another gas; functions both transitively and intransitively.

“We used a small pump to inflate the air mattress for our guests.”

“The safety manual explains that the life vest will automatically inflate upon contact with water, providing immediate buoyancy for the wearer.”

Synonyms

pump upblow upexpand

Antonyms

02to exaggerate

B2 · Upper Intermediate

v. to make something sound more important, better, or worse than it actually is.

v. to represent something in an exaggerated manner; to puff up or swell beyond justified limits.

“He tried to inflate his work experience on his resume to get the job.”

“Critics argued that the marketing department deliberately chose to inflate the product's capabilities, leading to widespread consumer disappointment.”

Antonyms

understatedownplay

03economics

C1 · Advanced Technical · Academic

v. to increase the amount of money in use, which usually makes prices go up.

v. to increase the volume of available currency or credit, resulting in a rise in price levels. Often used in passive constructions.

“The government's decision to print more money began to inflate the cost of food.”

“Economists warned that the central bank's aggressive stimulus package might inadvertently inflate asset prices to unsustainable levels.”

Synonyms

Antonyms

04computing

C1 · Advanced Computing Technical

v. to return compressed data back to its original, larger size.

v. to decompress a data stream or file that has been previously shrunk using a compression algorithm.

“The software needs to inflate the zip file before it can install the program.”

“The application uses a specific library to inflate the incoming data packets, ensuring that the original file structure is perfectly restored.”

Synonyms

decompressextractunzip

Antonyms

Real-World Examples

“It involves taking one deep inhale, followed by a second, shorter “sip” of air to fully inflate the lungs, before a long, slow, lung-emptying exhale through the mouth.”
The Guardian 2 Oct 2026
“I usually end up blowing into the one-way valve to inflate it quickly.”
The Guardian 16 Apr 2026

Etymology

From Latin īnflātus, perfect passive participle of īnflō, see -ate (verb-forming suffix). Doublet of inblow.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

VERB

inflate(B2)

Domain

Computing

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Occasional
Level
B2 · Upper Intermediate
Updated

QR code

englishreference.com/q/inflate

English Reference