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English definition of “Highness”

Highness

noun uk   /ˈhaɪ.nəs/ formal us  
Her/His/Your Highness used when you are speaking to or about a royal person: [as form of address] Will that be all, Your Highness?Royalty, aristocracy and titles
(Definition of Highness from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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