slow up

slow up idiom
Slacken or cause to slacken in speed, as in The train slowed up as it approached the curve, or Come on, you're slowing me up. [Late 1800s] Also see slow down, def. 1.

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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