/ Dictionary / Index C Così fan tutte*: Meaning and Definition of Find definitions for: Co•sì fan tut•te Pronunciation: (It.kô-zē' fän tt'te), [key] a comic opera (1790) by Wolfgang Amadeus Mozart. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Coshocton cosign Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language