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1897, in the meaning defined above
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Time Traveler for four-letter
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From the Editors at Merriam-Webster
A Countdown of Words with Numbers 10-1
From 'hang ten' to 'one-horse town'
four-lined plant bug
Cite this Entry
“Four-letter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/four-letter. Accessed 18 Sep. 2020.
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