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English Lexicon

Decelerate

/diːˈsel.ə.reɪt/
verbCEFR B2 (Upper)Top #9450 frequency
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Comprehensive Definitions & Senses

2 senses
As verb
  1. 1

    To reduce the speed of something or to decrease in velocity.

    "The driver had to decelerate sharply as the traffic light turned yellow."
  2. 2

    To slow down the rate of progress or occurrence of a process or event.

    "The central bank implemented policies to decelerate the rate of inflation."
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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived from the Latin prefix de- (down, away) combined with celerare (to hasten, from celer meaning swift). Entering the English language in the mid-19th century, it was initially used in technical and scientific contexts before becoming standard automotive and general terminology.

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