/ Dictionary / Index R redoubtable: Meaning and Definition of Find definitions for: re•doubt•a•ble Pronunciation: (ri-dou'tu-bul), [key] — adj. that is to be feared; formidable. commanding or evoking respect, reverence, or the like. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: redoubtable (Thesaurus) redoubt redoubted Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language