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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
then since
Grammar usage guide and real-world examplesUSAGE SUMMARY
"then since" is a perfectly correct phrase in written English! It can be used to link two related ideas that follow each other.
For example: "I've tried all the options available, but I still can't solve this problem. Then since I can't do it myself, I guess I'll have to ask for help."
✓ Grammatically correct
Science
News & Media
Academia
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
Then, since,.
England had not seen such carving before and then since right up to the Victorian period.
News & Media
Especially then, since rebellion becomes outmoded.
News & Media
Ask, then: since such thy wish, I will inform thee.
But then, since the age of Twitter, neither am I.
News & Media
Have you been in love since then, since 2012?
News & Media
"Then, since I won, it's been like my temple".
News & Media
Then, since there will be residential development as well, what should the street life look like?
Academia
As for the finishing salt, he'd given up by then, since the planks had caught fire.
News & Media
Then, since you're dealing with stuff, innovations and improvement come more slowly.
News & Media
Then, since this is Jersey, ask, Do I know the Boss?
News & Media
Expert writing Tips
Best practice
Use "then since" to clearly establish a sequence where one event or condition logically follows from and is caused by another. This emphasizes both the temporal and causal connection.
Common error
Avoid using "then since" excessively in overly complex sentences. If the sentence becomes convoluted, consider breaking it into two separate sentences for clarity. Overuse can make your writing sound repetitive and less impactful.
Source & Trust
81%
Authority and reliability
4.4/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "then since" functions as a causal connector, linking two clauses where the first provides context or a prior event, and the second explains the consequence or result. It indicates both a sequence and a cause-and-effect relationship, as Ludwig AI confirms.
Frequent in
Science
44%
News & Media
33%
Academia
11%
Less common in
Formal & Business
6%
Encyclopedias
3%
Reference
3%
Ludwig's WRAP-UP
In summary, "then since" serves as a causal connector, effectively linking two related ideas where the first logically precedes and influences the second. Ludwig AI confirms its grammatical correctness and appropriateness for establishing both temporal sequence and cause-and-effect. While it's generally suitable for neutral to formal contexts, be mindful of overuse in complex sentences to maintain clarity. Alternatives like "therefore because" or "consequently as" offer similar functionality. With a very common frequency, it appears across various domains with heavier presence in scientific and news media domains.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
therefore because
Replaces "then" with "therefore", emphasizing the consequence, and maintains "since" for the reason.
consequently as
Substitutes "then" with "consequently", highlighting the result, while "as" plays a similar role to "since" indicating cause.
thus given that
"Thus" replaces "then" to show deduction, and "given that" replaces "since" to introduce a premise.
hence considering that
"Hence" provides a formal alternative to "then", and "considering that" offers a more elaborate substitute for "since".
accordingly because
"Accordingly" indicates a result or consequence, and "because" explains the reason.
subsequently as a result
"Subsequently" emphasizes the temporal sequence, while "as a result" highlights the outcome.
in that case because
Presents a condition followed by a reason, replacing "then" with "in that case".
in view of the fact that
Offers a more formal replacement of 'since' with a longer, more explanatory phrase.
seeing as how
Provides a more colloquial alternative to 'since', indicating a reason or cause.
that being the case since
Introduces a situation before stating a reason, offering a more elaborate way to connect ideas.
FAQs
How can I use "then since" in a sentence?
Use "then since" to connect two related ideas where the first idea logically leads to the second, emphasizing the temporal and causal relationship. For example, "The data was corrupted; then since we couldn't recover it, we had to restart the analysis."
What phrases are similar to "then since"?
Alternatives include "therefore because", "consequently as", or "thus given that". The best choice depends on the specific nuance you wish to convey.
Is it always necessary to include "then" before "since"?
While "then since" is grammatically correct, using only "since" can often be more concise and effective. The addition of "then" emphasizes the sequence but may not always be needed for clarity. For example, instead of "Then since it was raining, we stayed inside", you could simply say "Since it was raining, we stayed inside".
What is the difference between "then since" and "because"?
"Because" directly introduces a reason or cause. "Then since" implies a sequence where something happened, and then, because of that, something else followed. The emphasis is on both the temporal order and the causality.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
81%
Authority and reliability
4.4/5
Expert rating
Real-world application tested