Definition from Wiktionary, the free dictionary
Jump to: navigation, search
See also: flat earther


Alternative forms[edit]


flat-earther (plural flat-earthers)

  1. A person who believes or advocates the theory that the planet Earth is flat.
  2. (idiomatic, by extension) A person who believes or advocates an outlandish, discredited theory; a person who refuses to acknowledge the truth despite overwhelming evidence.
    • 2008, Bob Sweere, "Voice of the Day: Global warming? Yes," News-Leader.com (Missouri), 16 Jun. (retrieved 1 July 2008),
      Global warming is settled, unless you are a flat earther or an energy company apologist.



  • "flat-earther" at OneLook® Dictionary Search.
  • Random House Webster's Unabridged Electronic Dictionary, 1987-1996.