The term “w00t” (pronounced, and sometimes spelled, “woot”; IPA: /ˈwuːt/) is a slang interjection used to express happiness, excitement or joy, most often expressed via the Internet. The expression has been used in Usenet posts, multiplayer computer games (especially first-person shooters), the IRC and SILC chat protocols, instant messages, weblogs, and web forums.

“W00t” was Merriam-Webster’s Word of the Year for 2007.