A word that hasn't been defined yet on Urban Dictionary. These are EXTREMELY rare, as someone has either stole your idea, or you aren't creative enough.
Horny Teen 1: What are you doing?
Horny Teen 2: Trying to find an undefined word in the good ol' UD.
Horny Teen 1: Why?
Horny Teen 2: So I can define it, idiot!
A word that is not defined like this one
That word is an undefined words