woo-hoo

or woo hoo or whoo-hoo

[ woo-hoo ]
/ ˈwuˈhu /
|

interjection Informal.

(used to express excitement, delight, etc.): Woo-hoo! It's Friday!
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for woohoo

British Dictionary definitions for woohoo

woohoo

/ (wʊˈhuː) /

interjection

informal an exclamation of joy, approval, etc
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