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Possibly from the term duh, a sound indicating faltering speech and assumed stupidity, glottalized for emphasis.



  1. (slang) Draws attention to an act of foolishness or stupidity.
    I put chips in my soup instead of crackers. Derp.
    • 1997 February 25, Treichler, Pete, “Re: Patrick Incompentence Redux”,, Usenet:
      Now that I think of it, i'm surprised that you didn't make fun of his first name as well- 'How could you believe in a guy who has a girly first name?' derp- you are a fool.
  2. (slang) placeholder for unimportant details, blah blah blah
    • 2002 November 27, “The Biggest Douche in the Universe”, South Park[1] season 6 episode 15, 14:28:
      Rob Schneider derp dee derp. Derp dee derpity derpy derp. Until one day, a derp a derp a derp a derp.
    • 2011 January 10, Allen, Tom, “Re: Expression of a woman's sexuality”, soc.sexuality.general, Usenet:
      Me: Hi, remember me from SSG? Can I ask you about herping the derp?
      R1: Oh, hai Tom. Sure, that would be the derp that was herping blah blah blah...

Usage notes

In the placeholder sense, often used with herp. Can be used like a noun or a verb or with various suffixes. Connotes that whatever it stands in for does not matter, and often that it is foolish or nonsensical.


derp (third-person singular simple present derps, present participle derping, simple past and past participle derped)

  1. To act stupidly or foolishly
  2. To make a stupid mistake
    • 2011 August 22, Scion-of-Fenrir, “Re: 4e Forgotten Realms Campaign”, Google Groups: /tg/'s Google group:
      Wait, so we're allowed to have magic items from the start? I must of derped pretty hard.
  3. (slang, of eyes) To point in different directions; (of a person) To have a facial expression with one's eyes pointing in different directions.
    • 2012 April 22, Double Eight, “Re: Next Meetup”, Google Groups: Windy City Bronies:
      Also, there was a Derpy cameo in this one, but she didn't have derped eyes.
    • 2012 October 25, Brian Benchoff, “Electronic demon costume is surprisingly unnerving”, Hack A Day:
      The eyes are wired to the same I2C address to prevent derping, but the three red mouth LED matrices are capable of displaying anything that fits on an 8×24 LED matrix.

Derived terms

Old High German




  1. alternative form of derb