Breadcrumb Home > Dictionary > Index D don't-know: Meaning and Definition of Find definitions for: don't-know Pronunciation: (dōnt'nō'), [key] — n. a person who has no opinion or is undecided, as in answering an item on a public-opinion poll. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: don't-know (Thesaurus) don't Donus TrendingHere are the facts and trivia that people are buzzing about. Animal Group Terminology Largest Countries in the World (by Area) Current Events This Week: January 2023 State Abbreviations Dinosaur Fossils (By U.S. State!) The Chinese Zodiac ✖ Related Content Daily Word Quiz: criticaster Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language