- Yippee is defined as an expression used to communicate happiness and joy.
An example of yippee is what someone would say if they found out they won the lottery.
This boy yells, "yippee!"
yippee definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
used to express joy, delight, triumph, etc. with great excitement
yippee definition by American Heritage Dictionary
Used to express joy or elation.