Skip to main content
Dictionary
Store
Blog
World
Help
Advertise
Chat
System Status
Do Not Sell My Personal Information
Information Collection Notice
reCAPTCHA Privacy
Terms of Service
reCAPTCHA Terms
Privacy Policy
Accessibility
Report a Bug
Data Request
DMCA
© 1999–2026 Urban Dictionary ®
Words of the Day
Browse
Add a Definition
User Settings
Definitions by Cherushii
XXI
Ask Urban Dictionary about XXI
Share definition
Flag
XXI is a badass
gaming
group. Don't mess with them or you'll be pwnd
silly
. The XXI's specialize in wifi games such as Super Smash Bros. Brawl, Pokemon Diamond/
Pearl
, and many others.
"Don't
mess with
XXI or you'
ll
be pwn'd
silly
."
XXI
by
Cherushii
April 13, 2008
0
0
Get merch