speed up

See also: speed-up and speedup



  • (file)


speed up (third-person singular simple present speeds up, present participle speeding up, simple past and past participle speeded up or sped up)

  1. (idiomatic, intransitive) To accelerate; to increase speed.
    The car sped up as it went around the corner.
  2. (transitive) To increase the speed of something; to make something go faster.
    You shouldn't speed up your car when you go around corners.
    • 1960 February, “The dieselised St. Pancras suburban service”, in Trains Illustrated, page 95:
      The through Moorgate service has been most handsomely speeded up, and suburban trains in both directions now run non-stop between Kings Cross (Underground) and Elstree.
    • 1964 September, “Motive Power Miscellany: BR Workshops”, in Modern Railways, page 220:
      Work on anti-frost precautions on diesel locomotives is to be speeded up to ensure that most if not all locomotives have been dealt with before the winter sets in.




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