Someone who consitently roots for the underdog or who is rooting for an upset in a any particular competition. A typical instinct of anyone who grew up rooting for a team that has never won a championship.
Hey Randyl, you want the Cowboys to win this week? No way, I'm an underdogger. Seahawks all the way!
by Braddelcat October 29, 2009
buy the domain for your cat blog