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10.
aff
an expression of dissapointment or supurprise,with out saying fuck. in attempt to be civil.
AFFF! Theres a cop behind you.
or
AFFF! I can't find my keys...
by jmb February 25, 2005
 
1.
aff
A term used by brazillians in online games, most often in Tibia pretty much whenever they encounter any slight misfortune, and sometimes for no reason at all. Generally aff is a br's best friend. they spam it whenever they feel like it
br 1: mi frind pk u son of the bitch fuck
br 2: afffffffffff nooooo

player: Hey, would you like some free money?
br: AFF
player: ...what?
by Dr Pimp July 08, 2005
 
2.
aff
Originated from a brazilian term, which means deception or disappointment
<Playing an usual computer game someone really screws up everything>
Player: aff
by WhiteSands January 25, 2005
 
3.
a brazilian slang word used when you don't like something, kind of like a sigh

uma giria brasileira (usada só no batepapos) que voce usa quando voce nao gosta de alguma coisa ...é tipo uma suspira affs
affs i have to go to school tomorrow or
she's such a slut affs

affs eu tenho que ir a escola amanha (ou)
ela é um puta affs
by jessikinha August 15, 2011
 
4.
AFF
Away From Facebook
-yo where is joe? we need to talk about tonight.
-dunno, he is aff :/
by yóvanakkor April 15, 2010
 
5.
aff
Coming from the universe of Battletech and MechWarrior, "Aff" is an abbreviation of "Affirmative," meaning "yes." Its opposite, naturally, is "Neg," short for negative.

When expecting an answer one way or another, the prefix "qui" may be added.
Gunter: "Enemy Kodiak at 2 o'clock. Should I open fire, quiaff?"
Von Helsing: "Aff. Take out his legs."
by Benny the Icepick August 31, 2007
 
6.
Aff
Someone or something that is typically african and can seem bush.
Debbie: I didn't off the light.
Vicky: lol. You're so aff!
by Vicky A March 15, 2008
 
7.
AFF
An acronym for AdultFanFiction.net
Author: Have you been to AFF today? I updated my fic! ^^
by Lala Yamada November 23, 2007