interjection
yippee
YIP-ee/ˈjɪpi/
An exclamation expressing joy or excitement.
“Yippee!” he cries, jumping up with his fists raised in celebration.

Etymology
Yippee may be an expanded and modified form of hip, the exclamation used to introduce a united cheer. If so, its expression of delight continues that cheering function.
In context
we were just complaining we didn't do anything all summer now we have homework isn't that exciting yippee
More examples
- Yippee, we won the game!
- I let out a loud “yippee” after passing my driving test.
- Yippee, there's enough cake for another slice!
Similar words
- hooray
- Often cheers a success or victory, especially with others.
- yay
- Often expresses milder happiness or approval in everyday conversation.