Definition of 'slow down'

Verb

1. lose velocity; move more slowly; "The car decelerated"
      Synonyms: decelerate slow slow up retard
      Antonyms: accelerate speed up speed quicken
2. become slow or slower; "Production slowed"
      Synonyms: slow slow up slack slacken
3. cause to proceed more slowly; "The illness slowed him down"
      Synonyms: slow slow up
4. reduce the speed of; "He slowed down the car"
      Synonyms: decelerate
      Antonyms: accelerate speed speed up
5. become less tense, rest, or take one's ease; "He relaxed in the hot tub"; "Let's all relax after a hard day's work"
      Synonyms: relax loosen up unbend unwind decompress
      Antonyms: tense tense up

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