Hyfy

Acronym for "Hell yeah fuck yeah". Used in excitement and concurrence.

Dude A: "Are you going to the show tonight?"
DUde B: "HYFY mannnnn!"

by 40heaven November 29, 2010

Hyfy

(Adj) The state of being Hyfy can either be good or bad.
1. Being extremely happy, excited, or anxious.
OR
2. Being extremely mad, pissed, angered, or frustrated.

(Good) A boy just got the best Christmas present ever, he is considered hyfy.
(Bad) Someone just lost a big game/bet and is in a very hostile mood, then he or she is considered hyfy.
(Bad) "Yo I'm about to knock this dude out, im so hyfy"
(Good) "I was so hyfy when I saw my new shoes"

by Kjolly January 21, 2008

Hyfie

The east coast take on the San Fransisco Bay Area's "hyphy." Hyfie is a state of being similar to wild, crazy, crunk, fly, and ridikulus.

Homeboy set the party off last night, dude was gettin sooo hyfie.

by HyfieMomentum May 6, 2009