highness
n. C / Un. a title used when speaking to or about a member of a royal family, like a prince or princess. You usually say 'Your Highness' or 'Her Highness'.
n. a title of honour used for addressing or referring to a person of royal rank, such as a prince, princess, or duke. When used as a direct address, it is preceded by the possessive 'Your'.
Her Royal Highness will arrive at the ceremony at noon.
The ambassador bowed deeply and addressed the prince as 'Your Highness' during the formal introduction.
Protocol dictates that one should wait for His Highness to initiate conversation rather than speaking first during a formal audience at the palace.
Calque of Italian altezza, from Late Latin altitia, from altus + -itia, equivalent to high + -ness. See highness for formation of the English term.
Capitalised when used as a specific title or direct address; often preceded by a possessive pronoun like 'Your', 'His', or 'Her'.
Hello Highness, how are you?Hello Your Highness, how are you?When addressing royalty directly, the title must be preceded by the possessive 'Your'.