/ Dictionary / Index M misterioso: Meaning and Definition of Find definitions for: mis•te•ri•o•so Pronunciation: (mi-stēr"ē-ō'sōIt.mē"ste-ryô'sô), [key] — adj. Music. mysterious, strange, or weird. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Mister Charlie mistflower Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language