slow down

slow down idiom
  1. Delay, retard, reduce speed, as in She slowed down the sled by dragging her foot, or Slow down, Bill; you're driving much too fast. [First half of 1800s] Also see slow up.
  2. Become less active or vigorous, as in Now that I'm in my seventies I find I've slowed down quite a bit. [Second half of 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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