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

Still, economists forecast that growth will slow in the fourth quarter and decelerate further next year. Christopher Rugaber, The Seattle Times, "US economy grew at brisk 3.5 pct. annual rate last quarter," 28 Nov. 2018 To date, business investment has been lackluster, with growth decelerating in the second quarter to 1.5% annualized, or the slowest advance since late 2016. Paul Vieira, WSJ, "Canada Unveils Tax Incentives to Offset Trump Effect," 21 Nov. 2018 During this stage, your heartbeat, breathing, and eye movements decelerate, your muscles relax, and your brain waves begin to slow down, the National Institute of Neurological Disorders and Stroke says. Korin Miller, SELF, "7 Reasons You Might Wake Up Gasping for Air," 2 Oct. 2018 The metro areas that saw home-price growth decelerate by at least 1 percentage point from May to June include Seattle, Bellingham, Mount Vernon-Anacortes, Bremerton-Silverdale and Kennewick-Richland. Mike Rosenberg, The Seattle Times, "Washington state no longer has the nation’s fastest-climbing home prices," 13 Aug. 2018 Device makers have also turned to acquisitions to fuel sales growth as overall market increases have decelerated in recent years. Dana Cimilluca, WSJ, "Stryker Makes Takeover Approach to Boston Scientific," 11 June 2018 Measures of business activity globally have decelerated from multiyear highs, with Europe exhibiting some of the steepest declines in growth. Michael Wursthorn, WSJ, "Dow Industrial Average Manages Scant 2nd-Quarter Gain, Vexed By Trade Woes," 1 July 2018 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

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

6 Dec 2018

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 \
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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