/ Dictionary / Index M missy: Meaning and Definition of Find definitions for: miss•y Pronunciation: (mis'ē), [key] — pl. miss•ies. young miss; girl. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: missy (Thesaurus) missus mist Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language