English to English

verb (v)

• become slow or slower(verb.change)

  Synonym:
  slack, slacken, slow, slow down
  

  source: wordnet30
• cause to proceed more slowly(verb.change)

  Synonym:
  slow, slow down
  

  source: wordnet30
• lose velocity; move more slowly(verb.change)

  Synonym:
  decelerate, retard, slow, slow down
  Antonym:
  accelerate, quicken, speed, speed up
  

  source: wordnet30