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

Two bicycle-style hand brakes made decelerating dead simple. Scott Kirsner, BostonGlobe.com, "This could be the Volvo of e-scooters," 8 July 2019 Growth in domestic infrastructure spending decelerated in the January-May period to 4% from 4.4% in the first four months of the year and double-digit increases in previous years. James T. Areddy, WSJ, "China’s Consumers Turn Cautious, Weakening President Xi’s Hand Before Trump Meeting," 25 June 2019 Meanwhile, Internet ad revenue for the leading U.S. platforms decelerated to 20% growth in the first quarter of 2019, down from a 37% growth rate on year ago. Kevin Kelleher, Fortune, "51% of the World's Population Is Now Online, But Growth Is Slowing, Says Mary Meeker's 2019 Internet Trends Report," 11 June 2019 The latest jobs report, which will be published at 8:30 a.m. ET, is expected to show that US payroll growth decelerated to 185,000 jobs in May, according to a Refinitiv survey of economists. Julia Horowitz, CNN, "US jobs report; Beyond Meat surge; Stock market relief," 7 June 2019 Instead of tearing apart in a Big Rip, a quintessent universe would gradually decelerate, and in most models, would eventually stop expanding and contract in either a Big Crunch or Big Bounce. Quanta Magazine, "Dark Energy May Be Incompatible With String Theory," 9 Aug. 2018 The decelerating winds create shear regions that are prone to turbulence. Michelle Z. Donahue, National Geographic, "What is turbulence—and how can you calm down about it?," 12 June 2019 The Rockies tied it in the sixth, when David Dahl’s rapidly decelerating grounder into right field was enough to allow Trevor Story — the recipient of a two-out walk one batter earlier — to score all the way from first. Tim Reynolds, The Seattle Times, "Blackmon has 3 hits, Rockies 2-hit Marlins 6-1," 29 Mar. 2019 Chemical materials and products rose 1.9%, decelerating from 4.4% growth. WSJ, "China’s Economy Flashes New Warning Signs," 14 Dec. 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

19 Jul 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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