/ Dictionary / Index G ghastful: Meaning and Definition of Find definitions for: ghast•ful Pronunciation: (gast'ful, gäst'-), [key] — adj. Obs. frightful. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ghast ghastly Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language