/ Dictionary / Index R reasoned: Meaning and Definition of Find definitions for: rea•soned Pronunciation: (rē'zund), [key] — adj. based on reason: a carefully reasoned decision. containing reasons: a long, reasoned reply. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: reasoned (Thesaurus) reasonable reasoning Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language