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From the Editors at Merriam-Webster
100 Years Old: New Words of the 1920s
100 Years Old: New Words of the 1920s
A collection of words turning 100 this decade
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“Flat-earther.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flat-earther. Accessed 25 Feb. 2020.
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The first known use of flat-earther was in 1926
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