Synonymous with a skilled ninja. Often used to describe a quick and fierce enemy who is extremely agile and deadly.
Person #1: There's that girl Sarah, lets go beat er' up.
Person #2: Fuck that! She's a derf! Im leaving her alone.
by Slimescree December 17, 2007
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An idiotic person beyond the conceivable threshold of stupid.
That guy who cut me off is such a derf!
by Corgiprincess100 August 18, 2020
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Derf is a very powerful inter-dimensional entity that presides over all things pertaining to video games, technology, and the universal force of awesomeness. Though this is all that he is responsible for, he is still omnipotent and omniscient though usually lets its followers find their own way as long as they stay on the lighter side of morally gray. He speaks in 133t speak and internet slang, has many different personalities (one for each video game genre), and, if you do right by him in life, he will elevate you to the Emerald Arcade, where you will live among the most advanced technology, awesomest games, and a lot of other things. Hey I don't know it was a short conversation.
Dude 1: Man for a while there EA was pretty bad with their games.
Dude 2: I know I wonder why?
(burst of pixels, Derf appears)
Derf: I know I let them come under the influence of the Great Spectator for awhile.
Dude 1 & 2: Let us worship you!
by Derf's Prophet September 22, 2009
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A person of extremely high and incomprehensible intelligence. A genius of monumental and baffling proportions.
I wish I was just a derf. Then I would know the answers to all the questions in life.
by binchaser September 01, 2008
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Acronym for "Drag Exclusionary Radical Feminist". A person who espouses to be a feminist but who does not believe that men dressed in Drag should be included in the fight for equality, especially in employment or salary parity. This rabid exclusion of an entire class of women is usually a belief based on misplaced uptight morality.
DERFS are not helping the fight against the patriarchy
by a-a-a-a-ron January 10, 2019
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a # between 5 & 6 sometimes used as something you say when you are mad
oh derf! or one,two,three,four,derf,five
by mabgywugewinuygcyugbayhgrvn8sb February 07, 2010
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