/ Dictionary / Index M museful: Meaning and Definition of Find definitions for: muse•ful Pronunciation: (myz'ful), [key] — adj. Archaic. deeply thoughtful; pensive. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. muse museology Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language