Jiazzy can take on any part of speech. No, it's not just "jizz" or "jazz", it's anything else too! It could be a lamp if you even wanted it to be. The best way to pronounced Jiazzy is to get a french or proper accent. That way people wont think you're stupid trying to say it the American way. Use jiazzy in place of any plain word such as awesome, amazing, stupid, retarded, to make your sentence, well, jiazzy! This word brings smiles to people's faces (:D!) <--- like that.
(verb form) "Dude, I so jiazzed all over that biology test today. I know I passed." (that can be taken literally and figuratively)
(noun) "WHOA! did you just see that rainbow? that was the jiazz."
(adjective) "Where did you get that jiazzy lookin' dog? That's the jiazz."