/ Dictionary / Index T therewith: Meaning and Definition of Find definitions for: there•with Pronunciation: (âr"with', -wi'), [key] — adv. with that. in addition to that. following upon that; thereupon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: therewith (Thesaurus) thereupon therewithal Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language