Breadcrumb Home > Dictionary > Index U unnecessary: Meaning and Definition of Find definitions for: un•nec•es•sar•y Pronunciation: (un-nes'u-ser"ē), [key] — adj., n., pl. -sar•ies. —adj. not necessary or essential; needless; unessential. —n. things that are not necessary or essential. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unnecessary (Thesaurus) unnatural unnerve TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: rosarium Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language