highness Meaning, Definition & Usage

  1. noun (Your Highness or His Highness or Her Highness) title used to address a royal person
  2. noun the quality of being high or lofty
    loftiness.
  3. noun a high degree (of amount or force etc.)
    • responsible for the highness of the rates

WordNet

High"ness noun
Etymology
AS. heáhnes.
Definitions
  1. The state of being high; elevation; loftiness.
  2. A title of honor given to kings, princes, or other persons of rank; as, His Royal Highness. Shak.

Webster 1913