1792, in the meaning defined above
from the phrase thank you used in expressing gratitude
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Cite this Entry
“Thank-you.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thank-you. Accessed 10 Aug. 2022.
More from Merriam-Webster on thank-you
Britannica English: Translation of thank-you for Arabic Speakers
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