posi 

short for positive, and is a widely accepted term among scenster hardcore kids. most commonly used in songs by the band Good Clean Fun.

"dude, that wasn't very posi"

posi by J.L.V August 26, 2003

posi 

Short for positive. Being upbeat and having a positive outlook on life.

"I'm feelin' posi, nothing can hold me down."

posi by gian November 23, 2003

posi 

posi is short for the word positive. commonly refferd too in the style of hardcore music. positive hardcore becomes posi hardcore or posi core

that song is so posi.
or
that band has a posi vibe.

posi by dannyxxx November 5, 2005

posi 

In hot-rod groups, short for positrac. Positrac was the GM trade name for a differential gear which would lock under severe loading to ensure that both drive wheels were turning. Highly desired in drag racing. The positrac name is now mostly generic in usage, with many racers referring to every locking diff a "posi".

Watch both tires smoke! You can sure tell that guys running a posi!

posi by Earl_Buttle October 3, 2005

posi 

short for positivity, a term used often by people who want to keep life positive and/or happy.

-"Dude, I saw you make fun of that girl, so not posi..."
-"You're right man, I'm sorry."

posi by saladandtaco July 24, 2010

posi 

Posi (pronounced pah-zee) is short for "positive" and is being used increasingly by the Posi Music industry to define music that unites and inspires their audience.

I was having a rotten day and needed a little Posi pick me up.

posi by Mrs.Z October 22, 2010

posi 

posi short for positive hardcore. type of music that is hardcore but postive fast almost punk like in sound but with lyrics that state standing strong and never to give up also things such as if you fuck with me your dead. a term used alot by scene fucks such as my self.

comeback kid is posi as fuck man those guys are hardcore, they will fuck you up if you fuck with them or their freinds.

posi by xbloodyaffairx January 10, 2005