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View synonyms for high-water mark

high-water mark

[ hahy-waw-ter, -wot-er ]

noun

  1. a mark showing the highest level reached by a body of water.
  2. the highest point of anything; acme:

    Her speech was the high-water mark of the conference.



high-water mark

noun

    1. the level reached by sea water at high tide or by other stretches of water in flood
    2. the mark indicating this level
  1. the highest point
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of high-water mark1

First recorded in 1545–55
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Idioms and Phrases

The peak of something, especially an achievement. For example, This composition is the high-water mark of his entire output . This expression alludes to the highest mark left on shore by the tide. [Mid-1800s]

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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high waterhigh waters