/ Dictionary / Index T thenceforth: Meaning and Definition of Find definitions for: thence•forth Pronunciation: (ens"fôrth', -fōrth', ens'fôrth", -fōrth"), [key] — adv. from that time or place onward. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thenceforth (Thesaurus) thence theo- Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language