# decelerate

> English word · Verb · IPA /diːˈsɛləɹeɪt/ · frequency rank #68,141

## Definitions
1. To reduce the velocity of something.
2. To reduce the rate of advancement of something, such as a disease.
3. To go slower.

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

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/decelerate