authy

Authentic in the sense of legit, cool and underground. Used by the hipsters. Derived from the Bay Area.

Your shirt is totally authy - is it true vintage?

authie

Short for authoritarian. It is a derogatory term, used as an insult against people who hold authoritarian views.

Person 1: The government should monitor internet traffic and arrest people for suspicious activity.
Person 2: Ok authie.