Top Definition
A phrase used when one is supremely connfident in what he/she thinks or knows; having no doubt that one is right.
That ass is so fat, that's fordamnsure.
by BirdintheHand May 05, 2011
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.

×