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high time

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noun
  1. the appropriate time or past the appropriate time: It's high time he got out of bed.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for high time

high time

adverb
  1. the latest possible time; a time that is almost too lateit's high time you mended this shelf
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noun
  1. Also called: high old time an enjoyable and exciting time
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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

Idioms and Phrases with high time

high time

The appropriate time for something; also, past the appropriate time. For example, It's high time we did something about Martha's dog, or It's high time you children were in bed. The precise meaning of this term depends on the tone of voice and/or the context. For a synonym, see about time.

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