/ Dictionary / Index H highness: Meaning and Definition of Find definitions for: high•ness Pronunciation: (hī'nis), [key] — n. the quality or state of being high; loftiness. (cap.) a title of honor given to members of a royal family (usually prec. by His, Her, Your, etc.). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: highness (Thesaurus) high-necked high noon Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language