decelerate.
To reduce the velocity of something.
Meaning & usage
To reduce the velocity of something.
To reduce the rate of advancement of something, such as a disease.
To go slower.
Where this word comes from
Late 19th c., from de- + (ac)celerate. Compare deaccelerate.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.