go overboard

go overboard idiom
Show excessive enthusiasm, act in an excessive way. For example, It's easy to go overboard with a new stock offering, or She really went overboard, hiring the most expensive caterer. [Mid-1900s]

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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