Meaning & use
thenceforth
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Meaning
adverbformalliteraryold-fashioned
Starting at that time and continuing after it; from that moment on.
Grammar: Used as a time adverb, often at the start of a clause or after a comma. It does not take an object.
Patterns
- thenceforth + clause
The rule was changed in 1990, and thenceforth all new members had to pay a fee.
He moved to the countryside and thenceforth rarely visited the city.
Thenceforth, the two families lived in peace.
Common combinations
- thenceforth known as
- The building was renovated and thenceforth known as the Grand Hotel.
- thenceforth, the practice continued
- Thenceforth, the practice continued without interruption for many years.
- from thenceforth
- From thenceforth, no one dared to question her authority.
- thenceforth until
- Thenceforth until his death, he dedicated himself to charity.
Synonyms and how they differ
- thereafter
- Thereafter is more common in modern formal writing and often refers to a specific event that follows another; thenceforth emphasizes a continuing state from that time on.
- since
- Since is used with a present perfect tense and means 'from a past time until now'; thenceforth can refer to any past time and does not require the present perfect.
- from then on
- This is the everyday equivalent; it is much less formal and more common in speech.
Opposites
Word family
- thence adverb
- From that place or source; also formal and old-fashioned.
- henceforth adverb
- From this time on; the present-tense counterpart of thenceforth.
Commonly confused: thenceforth or henceforth? thenceforth or thereafter?
thenceforth vs henceforth
Henceforth means 'from this time on' (starting now), while thenceforth means 'from that time on' (starting at a past moment).
thenceforth vs thereafter
Thereafter means 'after that event', often in a sequence; thenceforth focuses on the continuation from that point.
Practice
Choose the correct word: The law was passed in 2005, and ______ all citizens had to carry an ID card.
Choose one answer.
The sentence refers to a time in the past (2005), so 'thenceforth' is correct. 'Henceforth' means from now on, which would not fit a past date. 'Thereafter' would need a specific event, not a year, and 'since' would require a present perfect tense.
Make it your own
Write a sentence using “thenceforth”, then check it and compare it with the examples above.