Top Definition
SUF
Steam(Powered)Users Forums.

The Steam Forums are owned by the Valve Corporation.

A forum to discuss Valve/Steam Games such as Half-life, Half-Life 2, Counter-Strike, Counter-Strike: Source, Day of Defeat...etc.

Many People use the Acronym SPUF But According to one of the Steam Powered Forum Mods (Blinxx), the correct Acronym is "SUF."
SP User: Long Live SPUF!!!!!!!!!!

Blinxx: Sorry Sir, It's "SUF"
by Average Joe89 August 20, 2006

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Suf
Suf is a boy/girl who always falls inlove with people he hasnt known long but also he likes to skate and draw. Suf is very social but antisocial in public
Suf is a arabic name meaning fast
by Suf May 14, 2015

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A SUF(s) is a Single Use Female. Basically a hooker or prostitute or typical fat chick who is good for one fuck only. These "women" are good for blowing off steam basically have the sexual worth better than a fleshlight but not considered an actual female.
"Bro I was so bored and lonely I had to settle for some SUFs. Not bad actually. "
by katytiger92 July 23, 2016

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suf
Abbr. for "shut up forever," for when "stfu" is not enough.
Sam: "insert increasingly stupid remark here"
Everybody else: "God, Sam, suf."
by WADE wade WADE November 13, 2011

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SUF
Shut Up Fucker
hey, you were so drunk last night!

Oh just SUF
by absofuckinlutelycooleo January 29, 2010

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SUF
The Secret Unicorns Forum, the now official Unicorns(the band) fan site/website.
"Man, today on SUF I found a bootleg of The Unicorns' 2004 performance at Rhino's, it was badass."
by Jake Mcgoogle May 04, 2009

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suf
Abbreviated form of "shut ur face."
jus suf bitch
by Steve P March 18, 2004

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