• synonyms

letter missive

noun, plural letters missive.
  1. a letter from an official source expressing a command, permission, invitation, etc.
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Origin of letter missive

1400–50; late Middle English < Middle French lettre missive or Medieval Latin littera missīva; see missive
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018