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

Other Words from decelerate

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

Synonyms & Antonyms for decelerate



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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 Employment gains could decelerate to 262,000 per month in the third quarter and 201,000 each month in the fourth quarter, Moody's forecast on Friday. CBS News, 6 May 2022 Over the coming year, CoreLogic predicts that home prices are set to decelerate to a 5% rate of growth. Lance Lambert, Fortune, 21 Apr. 2022 Easing competition nationwide is a positive sign that the housing market is beginning to cool and prices might soon begin to decelerate. Tristan Bove, Fortune, 25 Apr. 2022 That means inflation could decelerate in April, although analysts warn that the Ukraine conflict could lead to further energy shocks. Los Angeles Times, 12 Apr. 2022 The use of anti-aging products in your 20s as a preventative measure can significantly decelerate the visible aging course. Grooming Playbook, The Salt Lake Tribune, 10 Apr. 2022 Narrower tires actually provide better traction on off-road surfaces, require less energy to accelerate and decelerate, and create less wind resistance at higher speeds. Wes Siler, Outside Online, 19 Mar. 2022 Every single forecast model reviewed by Fortune in November predicted that home price growth would decelerate significantly in 2022. Fortune, 28 Feb. 2022 But the moves so far have had little effect, and overall economic growth is widely expected to decelerate further in the coming months. Stella Yifan Xie, WSJ, 17 Jan. 2022 See More

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.

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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Time Traveler for decelerate

Time Traveler

The first known use of decelerate was in 1899

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Dictionary Entries Near decelerate

deceive oneself into thinking


deceleration lane

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Statistics for decelerate

Last Updated

18 May 2022

Cite this Entry

“Decelerate.” Dictionary, Merriam-Webster, Accessed 27 May. 2022.

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More Definitions for decelerate


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.


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 decelerate (audio) \ noun

More from Merriam-Webster on decelerate

Nglish: Translation of decelerate for Spanish Speakers

Britannica English: Translation of decelerate for Arabic Speakers


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