/ Dictionary / Index F fideism: Meaning and Definition of Find definitions for: fi•de•ism Pronunciation: (fē'dā-iz"um, fī'dē-), [key] — n. exclusive reliance in religious matters upon faith, with consequent rejection of appeals to science or philosophy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Fidei Defensor* Fidel Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language