thenceforth

From Middle English thennesforth, equivalent to thence +‎ forth.

• (Received Pronunciation) IPA^(key): /ˌðɛnsˈfɔːθ/
• (US) IPA^(key): /ˌðɛnsˈfɔːɹθ/

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thenceforth (not comparable)

1. From that time on.
   • 1774, First Continental Congress, The Articles of Association:

     ...to the end, that all such foes to the rights of British-America may be publicly known, and universally contemned as the enemies of American liberty; and thenceforth we respectively will break off all dealings with him or her.

   • 1851, Herman Melville, chapter 63, in Moby Dick:

     Furthermore: you must know that when the second iron is thrown overboard, it thenceforth becomes a dangling, sharp-edged terror, skittishly curvetting about both boat and whale, entangling the lines, or cutting them, and making a prodigious sensation in all directions.

   • 1861, Charles Dickens, chapter VI, in Great Expectations:

     The fear of losing Joe’s confidence, and of thenceforth sitting in the chimney corner at night staring drearily at my forever lost companion and friend, tied up my tongue.

   • 1927-1929 — Mahatma Gandhi, An Autobiography or The Story of my Experiments with Truth, "Nirbal Ke Bala Rama", translated 1940 by Mahadev Desai

     I decided to act thenceforth with great caution; not to leave the house, but somehow leave Portsmouth.

   • 1994 February 12, Bill Clinton, Presidential Radio Address:

     Here his hand trembled as he set his pen to the proclamation that declared slaves thenceforth and forever free.

• (from that time on): thenceforward, thenceforwards

• henceforth
• thence