Breadcrumb Home > Dictionary > Index F Cite foolproof: Meaning and Definition of Find definitions for: fool•proof Pronunciation: (fl'prf"), [key] — adj. involving no risk or harm, even when tampered with. never-failing: a foolproof method. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: foolproof (Thesaurus) foolish foolscap TrendingHere are the facts and trivia that people are buzzing about. January 2021 Current Events: US News Noble Titles and Ranks in a Monarchy Chinese New Year History, Meaning, and Celebrations The Manchu The 5 Best Air Purifiers of 2020 Inaugural Trivia Related Content Daily Word Quiz: umbrage Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language