Your Serene Highness

English

Your Serene Highness (plural Your Serene Highnesses)

(formal) A term of address used in addressing a personage of any of a variety of certain dignities, but chiefly a reigning or sovereign prince, such as those of Liechtenstein and of Monaco.
- 1879, Baring-Gould, Germany, volume I, page 29:
  Princes to whom the predicate of durchlaucht (‘your serene highness’) is accorded.

term of address for a personage of a certain dignity, esp. a reigning prince

Third person – female (Her)	Third person – male (His)	Second person (Your)	Third person – plural (Their)
Her Britannic Majesty	His Britannic Majesty	Your Britannic Majesty	Their Britannic Majesties
Her Excellency	His Excellency	Your Excellency	Their Excellencies
Her Highness	His Highness	Your Highness	Their Highnesses
Her Holiness	His Holiness	Your Holiness	Their Holinesses
Her Imperial Highness	His Imperial Highness	Your Imperial Highness	Their Imperial Highnesses
Her Imperial Majesty	His Imperial Majesty	Your Imperial Majesty	Their Imperial Majesties
Her Maj	His Maj	Your Maj
Her Majesty	His Majesty	Your Majesty	Their Majesties
Her Royal Highness	His Royal Highness	Your Royal Highness	Their Royal Highnesses
Her Royal Majesty	His Royal Majesty	Your Royal Majesty	Their Royal Majesties
Her Serene Highness	His Serene Highness	Your Serene Highness	Their Serene Highnesses

James A. H. Murray et al., editors (1884–1928), “Serene, a. and sb.²”, in A New English Dictionary on Historical Principles (Oxford English Dictionary), volume VIII, Part 2 (S–Sh), London: Clarendon Press, →OCLC, pages 492–493:
A. adj. […] 4. An honorific epithet given to a reigning prince (esp. of Germany), formerly also to a member of a royal house, etc.; sometimes jocularly applied to anything appertaining to a person so designated. Also most serene = med.L. serenissimus, It. serenissimo, F. sérénissime. Cf. Serenity 4.
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