/ Dictionary / Index T thankful: Meaning and Definition of Find definitions for: thank•ful Pronunciation: (thangk'ful), [key] — adj. feeling or expressing gratitude; appreciative. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thankful (Thesaurus) thankee thankless Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language