1 definition by iron man2626

Top Definition
A one upper is one who feels like they need to be better than everyone else, so they constantly "one-up" anything that anyone says.
Kengs Likes To 1up Any One On MA. he is a class five one upper!
by iron man2626 September 10, 2009
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.