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Idioms and Phrases with at one's best

at one's best

In one's most excellent state or condition. For example, The photographer tried hard to show the bride at her best. [1500s]

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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.