High ‧ ness /ˈhaɪnəs, ˈhaɪnɪs/ BrE AmE noun [countable]
[ Word Family: noun : ↑ Highness , ↑ high ; adverb : ↑ high , ↑ highly ; adjective : ↑ high ]
Your/Her/His Highness used to speak to or about a prince or princess
High ‧ ness /ˈhaɪnəs, ˈhaɪnɪs/ BrE AmE noun [countable]
[ Word Family: noun : ↑ Highness , ↑ high ; adverb : ↑ high , ↑ highly ; adjective : ↑ high ]
Your/Her/His Highness used to speak to or about a prince or princess
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012