decelerate

verb
de·​cel·​er·​ate | \ (ˌ)dē-ˈse-lə-ˌrāt How to pronounce decelerate (audio) \
decelerated; decelerating

Definition of decelerate

transitive verb

1 : to reduce the speed of : slow down decelerate a car
2 : to decrease the rate of progress of decelerate growth decelerate soil erosion

intransitive verb

: to move at decreasing speed

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Other Words from decelerate

deceleration \ (ˌ)dē-​ˌse-​lə-​ˈrā-​shən How to pronounce deceleration (audio) \ noun
decelerator \ (ˌ)dē-​ˈse-​lə-​rā-​tər How to pronounce decelerator (audio) \ noun

Synonyms & Antonyms for decelerate

Synonyms

brake, retard, slacken, slow

Antonyms

accelerate, hasten, hurry, quicken, rush, speed (up), step up

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Examples of decelerate in a Sentence

she decelerated the car as we entered the school zone

Recent Examples on the Web

Advertising Sales have been weak lately, in part due to the decelerating Chinese economy, but in countries moving up the socioeconomic scale, demand for hot water remains. The Motley Fool, The Seattle Times, "The Motley Fool: Checking out home values in your area," 30 Mar. 2019 When decelerating, the propulsion motor acts as a generator to supply electricity to the battery when slowing down, via regenerative braking. Eric Adams, WIRED, "The Crazy, Complicated Engineering Inside Honda's New Clarity Hybrid," 27 Apr. 2018 The underlying details of the report show longer-term price growth in the services industry has been decelerating since the middle of 2018, while prices for goods have finally started to grow in recent months. Sharon Nunn, WSJ, "Energy Prices Hold Down Overall U.S. Inflation," 13 Feb. 2019 Chief executive Fabrizio Freda said in an earnings call last week that high-end beauty products are a relatively affordable luxury that younger Chinese shoppers keep buying, despite a decelerating national economy. Theo Francis, WSJ, "How Bad Is the China Slowdown? U.S. Companies Offer Some Answers," 11 Feb. 2019 Wall Street’s consensus calls for gross merchandise volume growth for eBay’s marketplace business to decelerate to about 3% this year compared with an estimated 8% for 2018, according to FactSet. Laura Forman, WSJ, "Can Activist Lightning Strike Twice for eBay?," 22 Jan. 2019 Concerns also remain about the pace of economic growth heading into 2019, as some investors expect the expansion to decelerate after two consecutive quarters of above-trend growth earlier this year. Daniel Kruger, WSJ, "U.S. Government Bonds Gain as Stocks Sink," 4 Dec. 2018 The economy likely further decelerated in the final quarter of the year and is expected to continue in the first quarter of 2019, said economists at Huatai Securities in a research note. WSJ, "China’s Manufacturing Sector Contracts," 30 Dec. 2018 Consumer spending has decelerated because of a combination of tougher mortgage-financing rules and higher interest rates. Paul Vieira, WSJ, "Canada Unveils Tax Incentives to Offset Trump Effect," 21 Nov. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'decelerate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of decelerate

1899, in the meaning defined at transitive sense 1

History and Etymology for decelerate

de- + accelerate

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Statistics for decelerate

Last Updated

26 Apr 2019

Look-up Popularity

Time Traveler for decelerate

The first known use of decelerate was in 1899

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More Definitions for decelerate

decelerate

verb

English Language Learners Definition of decelerate

: to move slower : to lose speed
: to cause (something) to happen more slowly

decelerate

verb
de·​cel·​er·​ate | \ dē-ˈse-lə-ˌrāt How to pronounce decelerate (audio) \
decelerated; decelerating

Kids Definition of decelerate

: to slow down The car decelerated at the yellow light.

decelerate

verb
de·​cel·​er·​ate | \ (ˈ)dē-ˈsel-ə-ˌrāt How to pronounce decelerate (audio) \
decelerated; decelerating

Medical Definition of decelerate

transitive verb

: to reduce the speed of : slow down

intransitive verb

: to move at decreasing speed

Other Words from decelerate

deceleration \ (ˌ)dē-​ˌsel-​ə-​ˈrā-​shən How to pronounce deceleration (audio) \ noun

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Comments on decelerate

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