GDI 

1)A person not cool enough to join a fraternity or sorority, and spends every night of the week writing bull shit on urban dictionary about greeks.

2)The second lowest form of life next to the dung beatle

I was a GDI in college and look at me now. I'm the assistant manager at Mc Donalds, and soon to be manager after he leaves to college.

Only a GDI would wear jorts.

GDI by Apollo467 June 10, 2006

GDI 

God Damn It

GDI, I just deleted your address by mistake.

GDI by Beeon Time September 27, 2018

GDI 

It’s a way to say Goddamn it in a text message.

1.Throw the ball
2. That guy stole it!!
1. GDI!!!

GDI by GDI #1 June 11, 2021

GDI 

God Damn Individual. Used in the U.S. Army to denote someone who refuses to take orders and does whatever the fuck they want to the chagrin of their unit. Especially used in Basic Combat Training (BCT) where Drill Instructors attempt to turn a shit-ton of diverse recruits from different backgrounds (GDIs) into one cohesive functioning military unit. But there's always the one fucktard who doesn't give a fuck and will do whatever they want and will always be a GDI.

"Yo G, that fucktard doesn't give a fuck. He just made our whole platoon do 200 pushups by being a retarded fuckup. What a GDI. Let's throw him a blanket party tonight."

GDI by 7upp December 30, 2009

GDI 

Stands for "God Damn Independent"; Used to describe college students who do not join a fraternity or sorority

Hey did you pledge anything?
-Nope, I'm a GDI

GDI by jdar95 December 20, 2015

GDI 

Goddamn independent, usually referring to tree hugging liberals from san francisco who hate the greek system.

Greg Norris is a GDI

GDI by GNI69 November 23, 2011

GDI 

Someone not cool enough to be in a fraternity or sorority and thus has to talk shit about the Greek system. If only you were cooler you weak motherfucker. Fuck you.

Nathaniel rushed SigEp but was not of adequate quality to get in. Poor guy, he will always be a GDI.

GDI by Fratman June 10, 2006