Shortening of 'terrific'. Meaning great, fantastic, excellent. Commonly used in 1970s Britain. Often sarcastically.
Oh triffic, I've lost my job and my entire family has expired in a car crash.
by Thee Red Monkey June 02, 2006
Traffic that is trife as hell.
I'm gonna be late to the party, because I'm caught in all sorts of triffic.
by Burnie Cheese October 26, 2007