/ Dictionary / Index H hitherto: Meaning and Definition of Find definitions for: hith•er•to Pronunciation: (hi'ur-t"), [key] — adv. up to this time; until now: a fact hitherto unknown. to here. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hitherto (Thesaurus) hithermost hitherward Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language