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Added 10 October 2026

decelerate

/diːˈsɛləɹeɪt/ verb

In Latin: retardare Wiktionary

verb Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about decelerate at Wordnik → Where our words come from →

Lose velocity; move more slowly.
The car decelerated
Reduce the speed of.
He slowed down the car

Origin

Late 19th c., from de- + (ac)celerate. Compare deaccelerate.

From Wiktionary, via Kaikki.org (CC BY-SA)

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