decelerate

verb
de·cel·er·ate | \(ˌ)dē-ˈse-lə-ˌrāt \
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 \ noun
decelerator \(ˌ)dē-ˈse-lə-rā-tər \ 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

Tourism and exports have been driving the country’s economy and the government forecasts growth will now slow to 2.3 percent in 2018 as exports decelerate. Anabela Reis, Bloomberg.com, "Small Portuguese Firms Are Starting a New Trend," 25 June 2018 Charter said broadband customer growth decelerated in the first quarter, echoing a trend at Comcast and AT&T. Charter added 331,000 high-speed internet customers, compared with an addition of 428,000 a year ago. Shalini Ramachandran, WSJ, "Cable TV’s Cord-Cutting Woes Grow, Highlighting Divergence With Netflix," 27 Apr. 2018 The International Monetary Fund expects Chinese economic growth to decelerate to 6.6 percent this year from 6.9 percent in 2017. Washington Post, "Stuck in trade war, US and China face uncertain path to deal," 10 July 2018 Between Dallas and Fort Worth, the system would reach about 360 mph, quickly accelerating and decelerating for the 30-mile trip, which will take six minutes. Dug Begley, Houston Chronicle, "Hyperloop's first step bypasses Houston," 11 July 2018 Growth in financial services decelerated to 3.1 percent as the impact of a law capping commercial interest rates at 4 percentage points above the central bank rate filtered into the market. Adelaide Changole, Bloomberg.com, "Elections, Drought Dragged Down Kenyan Growth Rate Last Year," 25 Apr. 2018 If the Southern Ocean currents were to change in the future, that might either accelerate or decelerate the rate of climate change. Sarah Cahlan /, NBC News, "Antarctica is melting faster than we knew. Here's what it will take to save it.," 19 June 2018 Best Buy, whose shares had risen 11% since the start of the year, reported decelerating growth in online sales. Elizabeth Winkler, WSJ, "Best Buy: Don’t Touch That Omnichannel," 25 May 2018 Spain, for example, is set to grow 2.8% in 2018, down 0.1% from the spring’s forecast, before decelerating slightly in 2019 to 2.4%, thanks to strong private consumption and construction investments. Lucas Laursen, Fortune, "The EU Just Slashed the Eurozone Growth Forecast Because of U.S. Trade War Tensions," 12 July 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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Last Updated

11 Oct 2018

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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 \
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 \
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 \ noun

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