son Altesse

His/Her Highness

→ son
phrase Rare #40,104
His/Her Highness A formal title of respect for a royal or noble person. The possessive son is used regardless of the person's gender.
FR: Son Altesse arrivera dans quelques minutes.
EN: His Highness will arrive in a few minutes.

Son Altesse prouve encore qu'elle est mon élève la plus subtile.

Her Highness proves once again that she is my most perceptive student.

— Dune : Deuxième partie (2024)

Il faut que son Altesse prenne du repos.

His Highness needs to rest.

— Guerre et Paix (1968)

Son Altesse verra alors ce que j'ai accompli.

His Highness will then see what I have accomplished.

— White Snake (2019)

Son Altesse le prince ne peut vous recevoir.

His Highness the Prince cannot receive you.

— Guerre et Paix (1968)