Entry 1 sense Webster, 1913 Thenceforth /thĕnsfôrth/ · Thence·forth · IPA /ˌðɛnsˈfɔːɹθ/ 01 adv. From that time; thereafter. 1. From that time; thereafter. “If the salt have lost his savor, wherewith shall it be salted? it is thenceforth good for nothing.” — Matt. v. 13.