billets-doux

noun

plural of billet-doux
as in open letters

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Recent Examples of Synonyms for billets-doux
letters
Noun
  • On Monday, prosecutors sent similar letters to every county in the state, including Sacramento.
    — Sharon Bernstein, Sacbee.com, 29 Oct. 2026
  • Huang’s ideas concerned two formulas that appeared in Ramanujan’s letters and are now known as the Rogers-Ramanujan identities.
    — Lyndie Chiou, Scientific American, 29 Oct. 2026
Definition of letters
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

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billets
billets-doux
billfold
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Cite this Entry

“Billets-doux.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/billets-doux. Accessed 31 Oct. 2026.

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