/ Dictionary / Index H Hilary: Meaning and Definition of Find definitions for: Hil•a•ry Pronunciation: (hil'u-rē), [key] — n. See a male or female given name: from a Latin word meaning “cheerful.” Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Hilarius Hilary of Poitiers Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language