Synonyms for Letters of marque:

• n.

  •letter of mark and reprisal (noun)
  • letter of mark and reprisal.
  •letter of marque (noun)
  • letter of marque.
  •Other relevant words: (noun)
  • permit,
  • license,
  • licence.

• Other synonyms:

  •Other relevant words (noun):
  • bull,
  • dead letter,
  • poison-pen letter,
  • newsletter,
  • airplane hijacking,
  • piracy,
  • monitory,
  • air piracy,
  • open letter,
  • encyclical,
  • letter of credit,
  • form letter,
  • chain letter,
  • Nixie,
  • Freebooting,
  • fan letter,
  • air letter,
  • skyjacking,
  • airgraph,
  • Privateering,
  • letters patent,
  • aerogram,
  • drop letter,
  • buccaneering,
  • love letter,
  • billet-doux,
  • letter of introduction.