adj.

German online slang for something that is insanely laborious and/or exhausting, sometimes also used in English.
Der Tag war heute einfach nur iffe. 😩 - Today was just so insanely exhausting.😩
Bock auf drei Stunden Kreuzheben oder ist dir zu iffe? - Up for three hours of deadlifting or is that too much work for you?
by ArnieSchmarnie April 6, 2023
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in Mathematics and Physics IFF stands for " if and only if ".
For P(x), IFF P(a)=0, then (x-a) is a factor of P(x).
by arysmart May 19, 2013
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i'm fucked foundation- I.F.F

...derived from the G.F.F, Grenade Free Foundation
"Ronny is officially part of the IFF" -The situation
by lovelybuttons45 August 7, 2010
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An organization know as the I'm Fucked Foundation.
Ronnie Magro is currently president, CEO, and founder of this establishment by stuffing his face in a cocktail waitress' tits and then making out with two other chicks.
I joined the IFF today by fucking my best friend's sister.
by icedemon25 September 3, 2010
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This is the IM FUCKED FOUNDATION. you join this club when nothing goes your way or you feel as though the world is ganging up on you
i just told my girlfriend i cheated on her, i just became apart of the IFF.
by ARAE1989 August 7, 2010
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A specialized form of if: means "If and only if". Because it's pronounced the same as "if", it's mainly a written word.
by Deuce on Guard August 14, 2003
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