/ Dictionary / Index R regretful: Meaning and Definition of Find definitions for: re•gret•ful Pronunciation: (ri-gret'ful), [key] — adj. full of regret; sorrowful because of what is lost, gone, or done. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: regretful (Thesaurus) regret regrettable 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