Eff
A great way to not sound like a child when showing displeasure with a situation, person, action, outcome or any other thing that might go wrong in your sad little life.
This will, however, not simulate being an adult who has the balls to use big kid words. This might make you appear (based on delivery, situation and volume) 12 to 16 years of age unless you -are- said age, in which case present company's level of sobriety will determine how much of a tool you look like. The higher your company the greater the return.
Used mostly in Multiplayer Video Games to work around chat filters and to evade the Terms of Use which often frown upon language that might be considered harsh by people who think you should have their ideals.
1) Dood: "Then she stopped and I was all 'What the eff, broham?'"

Guy: "That was almost cool, but you eff'd it."

2) High Teen: "Doooood... Subbed my toe. Effin' hell, hurt like eff."

Wayhigh Teen: "I'm laughin' so hard it effin' hurts! You rock!"

Notsohigh Teen: "Eff? Really?... *yawn* What a toolbox."

3) WoWkid: "Eff, that boss one-shot me. EFF!"

WoWkid 2: "No cussing, I'm offended by people who have their own personality."

WoWkid: "Pfffff, it's not against the ToU. Nobody can stop me!"
by Machination July 21, 2011

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Top Definition
eff
A variant of "fuck" used on Canadian television, primarily "Royal Canadian Air Farce". Youths have been known to use it while quoting, if the word "fuck" should come up in the quotation.
"Aww, eff off!"
by Bowman June 16, 2002

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Eff
Eff: Explitive loosely related to the word "fuck" but more directly related to the word(s) "shit", "damn", "crap", "holy pancakes batman" etc. Was introduced to mainstream society as a club for underpriviledged teens and quickly became a worldwide slang for "dirty" words.
"Dude, Mr. Crane is effing getting on my effing nerves."
"He's such an effing homo"
"He's a mother effer."
"You're an effer."
by Jillian S. August 01, 2005

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Eff
Shortened and alternate version of the "F" word. Go figure.
"What the Eff, David Blaine!"
>Check out YouTube video, "David Blaine's Street Magic"
OR
"That's so effin stupid!"
by Veronica15 July 20, 2008

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EFF
Electronic Frontiers Foundation
The non-profit organization trying to prevent RIAA from becoming the dictator of the world.
by NeghVar August 06, 2003

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EFF
a way to say 'fuck' without actually saying it.
"That was a total EFF up!!!"
by LouSquires(: February 14, 2009

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eff
the shorted proper form of fuck
eff!
by zer0her0 August 29, 2008

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Eff
Used instead of saying fuck. When you are in company that do not appreciate the 'F' bomb.
"I'm so effing pissed, especially since I can't say 'fuck' here!"

"I really wanna 'eff' her!"
by thesumis182 May 15, 2012

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