Top Definition
Un - No or not.
tail - Regarding the devil's tail, representing evil.
1.) (No tail) meaning you do not represent evil.
2.) Someone against evil ways.
Guy 1: Ay man you wanna join the illuminati?

Guy 2: No way man! Im with god, Im untail.
by New guy 23 March 06, 2013

Free Daily Email

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

Emails are sent from We'll never spam you.