Upsilon is a Youtuber and staff on Cookiepawz discord server.
Upsilon is also a modern Microsoft DOS Virus.
Hello Upsilon!
Beware of the “Upsilon” Virus.
by CheesyTheCat May 3, 2019
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Best. Frat. Ever.

Notable Members Include:

Wayne Brady (Improv comic/ Actor)
Lester B. Pearson (Prime Minister of Canada)
Alan Thicke (The guy from fucking Growing Pains)
Alfred Sloan (GM Chairman)
Arnold O. Beckman (pH Scale guy)
Thomas Perkins (Newscorp Board)
Michael Eisner (CEO of Disney)
John Thain (CEO of Marrill Lynch)
Dr. Robert Cade (Inventor of Gatorade)
Randy Gregg (5 Stanley Cup Rings)
Juan Santos (President of Colombia)
Leland MacPhail (Former National Baseball League President AND GM of thhe New York Yankees)
James D. Rodgers (Former Head Coach of the Boston Celtics)
Pretty much the best frat around...

HAIL DELTA UPSILON
Delta Upsilon...Awesome
by DeltaUpsilon! May 31, 2011
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A male that is aware of the male hierarchy system, and is also aware of how to improve his standing on it (such as by transforming from a beta male to an alpha male), but wastes his time on the standings of other men instead of himself.
Bill knows that he could go to the gym and buy better clothes in order to be an alpha male instead of a beta male, however, he wastes his time giving advice to other beta males instead of applying his knowledge to himself. He is such an Upsilon Male!
by yumspoiledmilk February 8, 2021
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The worlds only international non-secret, non hazing fraternity. Delta Upsilon, an international men's fraternity founded in 1834, is committed to Building Better Men through our four founding principles, friendship, character, culture, & justice, that challenge our brothers to expect nothing less then excellence from themselves and others.
Rush Delta Upsilon

Dikaia Upotheke "Justice, our Foundation"
by AErrorist September 4, 2006
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Known for pounding the hottest strange on college campuses, running show in intramurals and pounding GDIs girlfriends the second they leave them alone. Can be easily spotted rocking short-shorts, sperry's and wearing costa del mars.
GDI: Where's my girlfriend

Friend: I think she left with that DUchebag in the sperry's

GDI: Damn I wish I was in Delta Upsilon!
by UABro-king September 26, 2011
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Fraternity that does not invite girls to parties and listens to country music.
Do you want to go to psi upsilon tonight?
No, I'm trying to talk to girls tonight.
by sooter December 3, 2014
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Commonly known as the biggest douchebags on college campuses nationwide. They pride themselves on their elitism (even though they take anyone who can throw a ball) and the fact that they are all overly obsessed with sports. Additionally, they are often referred to as DUchebags by others.
Hey man, whos that faggot?

Oh, hes just a DUchebag from delta upsilon, dont worry about him...
by john "hate those dicks" felder December 6, 2007
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