A Radical Islamic Fundamentalist. An extremist Islamicist normally of some kind of terrorist bent who may hold fringe beliefs like the return of the 12th imam.
Another RIF suicide bomb went off in Mosul today, wonder if it was Al Qaeda in Iraq or maybe the Al Aqsa Martyrs brigade.
by Sunburn April 23, 2008
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o gawd, the chantard's are coming, rif!
by drujon April 19, 2009
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Random Interesting Fact in the Thoughty2 Youtube Channel.
Welcome to another Random Interesting Facts (RIF) video!
by NebelEngel May 9, 2017
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rif, short for rifter, meaning a sly spliff
hey man i just tanned a fat rif!
by callumanthony93 December 15, 2010
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RIF dude, I have a paper due in an hour and I'm not halfway done dude.
by [ISBANGKOK19321] May 28, 2018
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The most intense level of fucked up that a person can get; when a person is so savage that he/she goes beast mode on everything in sight.
-Did you see Josh last night? He punched the wall and was threatening everyone.

-Yeah, man. He was pretty riffed up.
by bigdaddyfrat6969 May 6, 2011
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In the Federal Government, layoffs are called reduction in force (RIF) actions.

The RIF Reaper is the man who comes to your cube to tell you your services are no longer required.
"I think John may be in trouble the RIF Reaper was just over by his desk...."
by FTI76 April 14, 2010
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