/ Dictionary / Index U utmost: Meaning and Definition of Find definitions for: ut•most Pronunciation: (ut'mōst" or, esp. Brit., -must), [key] — adj. of the greatest or highest degree, quantity, or the like; greatest: of the utmost importance. being at the farthest point or extremity; farthest: the utmost reef of the island. —n. the greatest degree or amount: the utmost that can be said; The hotel provides the utmost in comfort. the most or best of one's abilities, powers, etc.: He did his utmost to finish on time. the extreme limit or extent: His patience was taxed to the utmost. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: utmost (Thesaurus) uti possidetis Utnapishtim Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language