English Reference
noun

highness

n.
US /ˈhaɪnəs/ UK /hˈaɪnəs/ high·ness UK spelling highness's, highnesses

  1. 01 B2 Upper Intermediate Formal

    a title of respect used when speaking to or about a prince or princess.

    a formal title of address or reference for a prince, princess, or other high-ranking royal. Usually preceded by 'His', 'Her', or 'Your'.

    Simple

    The ambassador bowed low when he was introduced to Her Royal Highness.

    In context

    The protocol officer reminded the visiting dignitaries that they should address the princess as Your Royal Highness during the formal reception.

  2. 02 C1 Advanced Literary

    the quality of being high or tall.

    the state or quality of being high; the physical property of elevation or height.

    Simple

    The highness of the mountain peaks made them difficult to climb.

    In context

    The sheer highness of the ceiling in the cathedral created an impressive sense of space and light.

    heightloftinesselevation
    lowness
  3. 03 C2 Proficiency ArchaicFormal

    an old title for a king or queen, used in the past before 'Majesty' became common.

    a historical style of address for a monarch, now largely superseded by 'Majesty'.

    Simple

    In the old documents, the king was referred to as His Highness.

    In context

    Historical records from the Tudor period show that the king was often addressed as Your Highness before the term Your Majesty became standard.

The new arrival, who is not a Royal Highness, becomes 15th in line to the throne, moving ahead of her great-uncle, the Duke of Edinburgh, Prince Edward.

BBC News· 17 Aug 2026

Calque of Italian altezza, from Late Latin altitia, from altus + -itia, equivalent to high + -ness. See highness for formation of the English term.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin la-lat altitia
Level C1 · Advanced
Frequency Frequent
Updated