Red-letter

Pronunciation: /ˈɹɛd- ˈɫɛtɝ/

Red-letter (adjective)

  1. A day that is very special or important, often marked in red on calendars.

Examples

  • Today is a red-letter day for everyone involved.
  • A red-letter day is a very important day.

Common collocations: red-letter day, celebrate a red-letter day

Synonyms of Red-letter

Formal

Neutral

Antonyms of Red-letter

  • — used to describe something of little importance.
  • — refers to something that is not important or valuable.