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woo-hoo

or woo hooor whoo-hoo

[woo-hoo]
interjection Informal.
  1. (used to express excitement, delight, etc.): Woo-hoo! It's Friday!
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for woohoo

Historical Examples

  • The king had arranged for a great big to-do, And the queen herself shouted the loudest “Woohoo!”

    FreeChildrenStories.com Collection

    Daniel Errico


British Dictionary definitions for woohoo

woohoo

interjection
  1. informal an exclamation of joy, approval, etc
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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