red-letter day

noun

Definition of red-letter day

informal
: a very happy and important day

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Cite this Entry

“Red-letter day.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/red-letter%20day. Accessed 12 December 2019.

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Nglish: Translation of red-letter day for Spanish Speakers

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