flat-earth·​er ˌflat-ˈər-thər How to pronounce flat-earther (audio)
variants or less commonly flat-earthist
: a person who believes that the planet Earth is flat

Examples of flat-earther in a Sentence

Recent Examples on the Web Google denied that there was any evidence that LaMDA was sentient, and experts agreed, in a tone that made those who would say otherwise seem like flat-earthers. Josh Morgenthau, Washington Post, 5 Aug. 2023 Modern flat-earthers came out of the mid to late nineteenth century with the explosion of the Industrial Revolution. Justin E. H. Smith, Harper's Magazine, 21 Aug. 2022

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'flat-earther.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1926, in the meaning defined above

Time Traveler
The first known use of flat-earther was in 1926

Dictionary Entries Near flat-earther

Cite this Entry

“Flat-earther.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flat-earther. Accessed 27 Sep. 2023.

Last Updated: - Updated example sentences
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