/ Dictionary / Index P phantasy: Meaning and Definition of Find definitions for: phan•ta•sy Pronunciation: (fan'tu-sē, -zē), [key] — pl. -sies. fantasy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: phantasy (Thesaurus) phantast phantom Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language