DECELERATION Synonyms: 25 Similar and Opposite Words

deceleration

noun

Definition of deceleration

as in decline

a usually gradual decrease in the pace or level of activity of something demand for our product is dropping, so I have ordered a deceleration of production

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of deceleration Concerns about this recent deceleration aside, a slight quarter-to-quarter boost is obviously preferable to the bundle’s comparable loss of 953,000 customers between the first and second quarters of this year. — Anthony Crupi, Sportico.com, 23 Sep. 2026 Altman and SpaceX's Elon Musk quickly backed Amodei's push for deceleration. — Cj Haddad, CNBC, 23 Sep. 2026 The approval includes a condition requiring a deceleration taper lane at the Sierra Wilds entrance on Wildcat Boulevard. — Nicole Buss, Sacbee.com, 23 Sep. 2026 Regenerative braking and deceleration also convert kinetic energy into driving range for the Prius by feeding its self-charging hybrid battery. — Charles Singh, USA Today, 11 Sep. 2026 The beds can contain hundreds of blocks laid out in a grid, growing progressively deeper so an aircraft slows without subjecting the landing gear — or the people aboard — to extreme deceleration forces that can be deadly in a crash. — Pete Muntean, CNN Money, 8 Sep. 2026 But Delapierre was flung forwards violently by the rapid deceleration and suffered a nasty face-plant into the cockpit. — Andrew Rice, New York Times, 20 Aug. 2026 The record proves that the silent cabin, instant torque and smooth deceleration of electric-vehicle (EV) driving does not have to be derived from a charging grid. — New Atlas, 13 Aug. 2026 This would lead to massive deceleration forces that instantly pulverize standard tracking electronics, leaving search teams completely blind. — Mrigakshi Dixit, Interesting Engineering, 10 July 2026

Recent Examples of Synonyms for deceleration

Noun

Huawei's push into the smartphone market comes as sales in China have slumped this year, with a double-digit decline year-on-year in August and September, according to Counterpoint Research.

— Matthew Tan,Evelyn Cheng, CNBC, 8 Oct. 2026
The co-CEOs have modeled a cash ramp-up in coming years but meanwhile there’s not a big cushion if churn rises, cable-network declines accelerate, the box office softens again or there’s macroeconomic or geopolitical disruption.

— Jill Goldsmith, Deadline, 7 Oct. 2026

Definition of decline

Noun

The train can recharge using existing 480V cabling in yards and terminals, through dedicated charging infrastructure, and by recovering energy through regenerative braking.

— Prabhat Ranjan Mishra, Interesting Engineering, 1 Oct. 2026
Today, software touches nearly every aspect and dimension of the vehicle, from battery management to infotainment, braking, cybersecurity and advanced driver assistance.

— Rajjie Sarmey, Forbes.com, 25 Sep. 2026

Definition of braking

Noun

That operational slowdown would subsequently reduce gasoline output and drive total domestic energy costs higher.

— , CNBC, 7 Oct. 2026
Against this backdrop of growing public concern and calls for a slowdown in frontier AI development, Fortune editor-in-chief Alyson Shontell flew out to San Francisco to speak with OpenAI CEO Sam Altman.

— Sam Forsdick, Fortune, 6 Oct. 2026

Definition of slowdown

Noun

The Everrati's left pedal operates pads on discs in the normal fashion, but the motors also give powerful regenerative retardation when the accelerator is lifted.

— Mike Duff, Car and Driver, 18 June 2021
The policy of retardation of submarine technology ended right after the beginning of the Anglo-German naval race (marked by the German Naval Laws of 1898 and 1900).

— chicagotribune.com, chicagotribune.com, 28 July 2017

Definition of retardation

Noun

On Friday, Tesla reported better-than-expected third-quarter vehicle deliveries, lifting the stock almost 5%, but the company still posted a 2% year-over-year drop.

— Lora Kolodny, CNBC, 3 Oct. 2026
The practical argument for wind-and-rain protection applies equally to spring transitional weather, and the trickle-down to Zara and Uniqlo means the shape will stay in stores well past this fall’s drop cycle.

— Lauren Schuster, Miami Herald, 2 Oct. 2026

Definition of drop

Noun

Exports have been a bright spot for China’s economy, which is otherwise struggling with slumping consumption and a years-long property market slump.

— Angelica Ang, Fortune, 5 Oct. 2026
Hernández and Tucker both went through major slumps at the plate during the season.

— Beth Harris, Chicago Tribune, 4 Oct. 2026

Definition of slump

Browse Nearby Words

decelerating

deceleration

decelerations

See all Nearby Words

Cite this Entry

Style

“Deceleration.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/deceleration. Accessed 9 Oct. 2026.

Copy Citation

Synonyms of deceleration

noun

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

inscrutable

Popular in Grammar & Usage

Do You Need a New Language Peeve?

The Exceptions of '-s' and '-es' Plurals

Merriam-Webster’s Great Big List of Words You Love to Hate

Is it 'nerve-racking' or 'nerve-wracking'?

What's the difference between 'fascism' and 'socialism'?

Popular in Wordplay

The Real Origin of 'Supercalifragilistic'

9 Words That Sound Like Insults But Aren't

7 Words for Bad Endings and Rough Situations

The Words of the Week - Oct. 9

Even More Bird Names that Sound Like Insults (and Sometimes Are)

Popular

Do You Need a New Language Peeve?

The Real Origin of 'Supercalifragilistic'

9 Words That Sound Like Insults But Aren't

Games & Quizzes