/ Dictionary / Index H high-up: Meaning and Definition of Find definitions for: high-up Pronunciation: (hī'up'), [key] — adj., n., pl. -ups. —adj. holding a high position or rank. —n. a person holding a high position or rank; higher-up. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: high-up (Thesaurus) highty-tighty high-voltage Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language