deflation

IPA/ˌdiːˈfleɪʃn/
KK[dɪflˈeʃən]IPA/ˌdiːˈfleɪʃn/

deflation — noun

1. the process of letting air out of something that is filled with air, such as a b

1.nounB2
Definition

the process of letting air out of something that is filled with air, such as a balloon, a tire, or an inflatable object, causing it to become smaller or lose its shape.

Example

The sudden deflation of the balloon sent it spinning wildly around the room.

uncountable noun with 'the' + of

After the deflation of the air mattress, the camping family packed it into a small carry bag.

concrete scenario: travel equipment

Common collocations
  • rapid deflation
  • slow deflation
  • complete deflation
  • deflation of the tire
  • deflation of the balloon
Synonyms
  • deflating

    The gerund form; interchangeable in many contexts ('the deflating of the balloon').

  • air release

    More mechanical or technical; often used for engineered systems rather than everyday objects.

Antonyms
  • inflation

    The opposite process of filling with air.

Usage Note

Uncountable; typically used with 'the deflation of [something]' to specify the object being emptied of air.

Common Mistakes

I heard a deflation sound.
I heard the sound of air escaping.
'Deflation' is not used as an adjective; describe the sound separately.
The tire has a deflation.
The tire has gone flat.' or 'The tire lost its air.
'Deflation' describes the process, not the resulting state.

2. a situation in which a person, group, or institution experiences a loss of confi

2.nounC1
Definition

a situation in which a person, group, or institution experiences a loss of confidence, energy, or strength, often after a disappointing event or failure.

Example

After losing the championship match, the team suffered a visible deflation in morale.

collocation: deflation in morale

The company's quarterly losses caused a deflation of optimism among its employees.

pattern: deflation of + abstract noun

Common collocations
  • sense of deflation
  • feeling of deflation
  • deflation in morale
  • deflation of spirits
  • sudden deflation
  • quiet deflation
Synonyms
  • discouragement

    More common and concrete; focuses on the emotional effect of disappointment.

  • letdown

    Informal; describes the feeling after an anticlimax rather than a general loss of strength.

  • dejection

    More formal and intense; implies sadness rather than simply loss of energy.

Antonyms
  • boost

    An increase in confidence or energy.

  • uplift

    A rise in spirits or motivation.

Usage Note

Often used with a following prepositional phrase introduced by 'in' or 'of' to specify where the loss occurs: 'deflation in morale', 'deflation of spirits'. Can be used as an uncountable noun or, less commonly, as a singular count noun ('a sense of deflation').

Common Mistakes

She felt deflation when she failed.
She felt a sense of deflation when she failed.' or 'She felt deflated.
As a noun, 'deflation' of feelings usually needs a framing phrase like 'a sense of' or 'a feeling of'.

3. a sustained fall in the general price level of goods and services in an economy,

3.nounB2
Definition

a sustained fall in the general price level of goods and services in an economy, usually caused by a reduction in the supply of money or credit and often linked to lower economic activity.

Example

The central bank introduced new policies to prevent deflation from damaging the national economy.

collocation: prevent deflation

During a period of deflation, consumers often delay purchases because they expect prices to keep falling.

typical scenario: consumer behavior during deflation

Common collocations
  • fight deflation
  • risk of deflation
  • fear of deflation
  • period of deflation
  • deflationary spiral
  • deflationary pressure
  • combat deflation
  • prevent deflation
Synonyms
  • price decline

    More descriptive and literal; less technical than 'deflation'.

  • disinflation

    A slowdown in the rate of inflation, not an actual price decrease — a different economic concept.

Antonyms
  • inflation

    A general rise in prices; the direct opposite economic condition.

  • hyperinflation

    Extremely rapid and out-of-control price increases.

Usage Note

Used as an uncountable noun in economic contexts. Often paired in contrast with 'inflation'. Frequently appears in formal or academic writing about macroeconomics. Common collocations include 'fight deflation', 'fear of deflation', and 'the risk of deflation'.

Common Mistakes

Prices are deflation.
Prices are falling.' or 'We are in a period of deflation.
'Deflation' labels the economic condition, not a property of prices themselves.
Deflation means everything becomes cheaper, which is good.
Deflation can harm the economy because people stop spending and debts become more expensive to repay.
Learners often assume deflation is positive; the usage note or definition should clarify the risks.

4. a general reduction in the worth or market value of something, such as currency,

4.nounC1
Definition

a general reduction in the worth or market value of something, such as currency, assets, or investments, without the specific causes or mechanisms of economic deflation.

Example

Investors grew concerned about the deflation of real estate prices in the coastal housing market.

collocation: deflation of + asset prices

The deflation of the national currency made imported goods significantly more expensive for local consumers.

Common collocations
  • deflation of prices
  • deflation of the currency
  • deflation in value
  • deflation of assets
  • steady deflation
  • gradual deflation
Synonyms
  • decrease in value

    More neutral and widely understood; avoids the technical tone of 'deflation'.

  • depreciation

    Specifically used for assets like currency or equipment over time.

  • devaluation

    Specifically a deliberate reduction in a currency's value by a government or central bank.

Antonyms

Usage Note

Closely overlaps with the economic sense (Sense 3) but applies to specific assets, currencies, or markets rather than an entire economy. 'Deflation of [asset category]' is the typical pattern. Can be countable when a specific percentage or amount is mentioned ('a 5% deflation').

Common Mistakes

My phone's value deflation is fast.
My phone has lost value quickly.
'Deflation' in this general sense is formal and uncommon for everyday items; simpler alternatives are more natural.

Word family

Synonym discussion

Sense: noun/3

Deflation, inflation, disinflation, and recession describe different economic conditions that learners often confuse. Deflation refers to a sustained fall in prices across an economy, usually caused by a contraction in the money supply. Inflation is the opposite — a general rise in prices over time. Disinflation describes a slowdown in the rate of inflation (prices still rise, but more slowly), which is not the same as deflation. Recession is a broader term for a period of declining economic output and rising unemployment; prices can fall (deflation) or continue rising (inflation) during a recession. For example: 'During the recession, the country experienced both high unemployment and deflation as consumer demand collapsed.' Understanding these distinctions helps learners follow economic news more accurately.

deflation ↗inflation ↗disinflation ↗recession ↗

Common collocations

Nouns

Adverbs

Phrases

  • fight deflation
  • the risk of deflation
  • a period of deflation
  • fear of deflation

Prepositions

Etymology

LatinFrenchEnglish

The English word 'deflation' was formed in the late 19th century by adding the prefix 'de-' (meaning 'down' or 'away', from Latin) to 'flation', which itself comes from 'inflate' (from Latin 'inflare', meaning 'to blow into'). The physical sense of letting air out appeared first, and the economic sense emerged in the early 20th century as a deliberate opposite to 'inflation'.