Decelerate
Decelerate verb - To cause to move or proceed at a less rapid pace.
Usage example: she decelerated the car as we entered the school zone
Slacken is a synonym for decelerate in slow topic. In some cases you can use "Slacken" instead a verb "Decelerate", when it comes to topics like slow down.
Nearby Words: deceleration, decelerating
Slacken
Slacken verb - To cause to move or proceed at a less rapid pace.
Usage example: drivers need to slacken their speed as they approach the sharp curve
Decelerate is a synonym for slacken in slow topic. You can use "Decelerate" instead a verb "Slacken", if it concerns topics such as slow down, become slower.
Mutual synonyms
Cite this Source
Slacken and Decelerate. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/decelerate/slacken
Decelerate & Slacken. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/decelerate/slacken>.
Slacken or Decelerate. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/decelerate/slacken.
Google Ngram Viewer shows how "decelerate" and "slacken" have occurred on timeline