highnessPronunciation: /ˈhʌɪnɪs/Definition of highness noun 1 (His/Your etc. Highness) a title given to a person of royal rank, or used in addressing them:I am most grateful, Your Highness 2 [mass noun] the quality of being high:the highness of her cheekbonesOrigin: Old English hēanes (see high, -ness)highness in other Oxford dictionaries Definition of highness in the US English dictionary
