Also known as a dorm rat. A student that for whatever reason, wants no part of the greek system. They oftentimes sit alone in their dorms on weekends wondering whats going on in the outside world. They have a distinct unfounded hostility toward Greeks, but never hesitate to leach off of them, such as drinking their beer, or attending parties, from which they always end up going home alone. Many of them get all of their information on Greek life from TV and movies, they never bother to do any actual research. According to them, Greeks are "losers who have to pay for their friends." It never occured to them that one of their favorite celebrities is very likely a greek. It never occured to them that a "frat boy" could someday turn out to be, say, some of the greatest athletes/coaches of all time(Michael Jordan, Shaq, Karl Malone, Wilt Chamberlain, Orel Hershiser, Terry Bradshaw, John Elway, Jerry Rice, Emmit Smith, Jackie Robinson, Hank Aaron, Pat Riley, Phil Jackson, Larry Brown, Mike Ditka, Tiger Woods, Jesse Owen, Troy Aikman, Lou Gehrig, just to name a few), some of the most famous actors/entertainers(Elvis Presley, Johnny Carson, David Letterman, James Caan, Burt Reynolds, Bob Hope, Brad Pitt, Matt Groening, Steven Spielberg, Warren Beaty, Tom Selleck, Ron Jeremy, Paul Newman, Merv Griffin, Danny Thomas, James Dean, Harrison Ford, John Wayne, just to name a few), (Martin Luther King Jr., Rev. Jesse Jackon, Nelson Mandela, 85% of US Supreme Court Justices, 76% of the Nations senators, all but two US presidents since 1825), a famous astronaut(everybody on the Apollo 11 crew), a famous business owner(43 of the 50 largest corporations in the nation are headed by "frat boys"), or even their mommy and daddy's boss. According to studies, only about half of GDI's end up graduating college, as opposed to 71% of Greeks.
That kid went GDI after getting blackballed by 2 fraternities.
by TKE468 January 2, 2006
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GDI, I lost again!
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by keyshaw September 23, 2004
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The definition of GDI is not completely known by greeks mainly because they havent seen them in about three and a half years. Nobody knows what they could possibly be doing with their lives because the greeks are too busy being fucking awesome and living their fucking awesome lives. Greeks dont even notice people who dont wear letters. Gdi's are invisible for all intents and purposes and are not worth the time of day. Good luck in life gdi's...sorry your not in the elite group of humans.
Some people pretend to have fun in college (gdi's) and others actually do(greeks).
by flo rida925 February 28, 2011
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God Damn Independent. Has No affiliation in the Greek world. Many GDI'd are looked down upon. If someone in a Fraternity or Sorority would happen to see a GDI you would most likely feel compelled to Kick there ass.
Hey man lets got beat that kids ass for being a GDI.
by Peanut March 8, 2005
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G.D.I.

Stands for God Damn Independent
Deriving from the latin word "gidiom" meaning stupid lame asshole who can't get girls and isn't allowed in any parties.

Definition: A non-impressive, ordinary person with no sense of style or social skills who was not fortunate enough to recieve a bid from a fraternity because they were not good enough. Instead of contributing to the college community, G.D.I.'s drive around in lifted trucks wearing affliction shirts and sweatpant shorts hating their lives and despising themselves for not being a better person and taking part in Greek Life.
"Fraternities are for gay guys man! I want to rage in my dorm and play World of Warcraft with my friends because im a gdi!"

"Dude people that don't live in frat houses still get girls bro! Trust me I get girls every night!"
by betaluvr November 9, 2011
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A superset of the so called "eggs," who don't even bother to join a fraternity of stature and consequence. Eggs suck, gdi's suck more.
My frat shorts are shorter than your frat shorts! gdi's think they have more friends than anyone in a 60 person fraternity. d-e-l-u-s-i-o-n-al
by The Bush May 5, 2006
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GDI, the site is down again.
by Excalibur0126 November 26, 2015
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