Used and loved by millions
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
but at that time
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "but at that time" is correct and usable in written English.
It can be used to refer to a specific moment in the past when discussing events or situations that occurred. Example: "I was unaware of the changes in policy, but at that time, I was focused on other projects."
✓ Grammatically correct
News & Media
Academia
Alternative expressions(20)
but then
back then
during that period
but at that juncture
but at that stage
but at that hour
but at that moment
but at that age
but at that point
but at that altitude
but at that elevation
but at that level
however at that time
unfortunately at that time
even at that time
yet at that time
however at that instant
yet at that moment
even so at that point
but already in that
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
Q: But at that time you...
Academia
But at that time, it was different.
News & Media
But at that time, no one was so concerned.
News & Media
But at that time, there was nothing in place.
News & Media
But at that time there was no deportation to Cambodia.
News & Media
But at that time they were not given this information.
News & Media
But at that time, the ECB spoke of succession planning.
News & Media
But at that time the surgeon's word was law.
News & Media
"But at that time I'm going to be 78 years old.
News & Media
It's hard to believe, but at that time pizza was exotic.
News & Media
"We networked heavily, but at that time you wouldn't have called it networking.
News & Media
Expert writing Tips
Best practice
Use "but at that time" to clearly indicate a contrast with a previously mentioned situation or condition in the past. This phrase works best when specifying a particular moment or period is important for understanding the contrast.
Common error
Be mindful not to use "but at that time" when a simpler construction like "but then" or "however" would suffice. Overusing the phrase can make your writing sound repetitive or unnecessarily wordy.
Source & Trust
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "but at that time" functions as an adverbial conjunction phrase, linking two clauses while introducing a contrast in the context of a specific past moment. Ludwig provides numerous examples that highlight the phrase's role in setting up temporal opposition.
Frequent in
News & Media
68%
Academia
12%
Science
9%
Less common in
Encyclopedias
4%
Formal & Business
3%
Reference
2%
Ludwig's WRAP-UP
In summary, the phrase "but at that time" is a grammatically sound and frequently used conjunction phrase that serves to introduce a contrast related to a specific point in the past. According to Ludwig, its neutral register makes it appropriate for a variety of contexts, including news articles and academic papers. While it's important to avoid redundancy by ensuring it adds necessary clarity, the phrase remains a useful tool for expressing temporal contrasts. Ludwig AI's analysis confirms the phrase's validity and widespread usage.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
however back then
Replaces "at that time" with "back then", emphasizing a past period while maintaining the contrast.
yet during that period
Substitutes "but" with "yet" and "at that time" with "during that period" for a more formal tone.
though in those days
Uses "though" instead of "but" and "in those days" to evoke a sense of a bygone era.
although then
Replaces "at that time" with "then", providing a more concise expression of temporal contrast.
nonetheless at that point
Offers a more formal alternative, replacing "but" with "nonetheless" and "time" with "point".
still at that juncture
Replaces "but" with "still" and "time" with "juncture", providing a slightly more sophisticated feel.
even so at that stage
Introduces a stronger sense of contrast with "even so", while "at that stage" replaces the original temporal marker.
conversely at that moment
Emphasizes the contrasting element with "conversely" and focuses on a specific instant with "at that moment".
on the other hand then
Uses "on the other hand" for a clearer contrast, with "then" serving as a simplified temporal reference.
in contrast at that hour
Highlights the opposition with "in contrast" and specifies a particular time with "at that hour".
FAQs
How can I use "but at that time" in a sentence?
The phrase "but at that time" introduces a contrast related to a specific moment in the past. For example, "I didn't understand the implications, but at that time, I trusted his judgment."
What are some alternatives to "but at that time"?
You can use alternatives like "however back then", "yet during that period", or "although then" depending on the context and desired level of formality.
Is there a difference between "but at that time" and "but then"?
While both indicate a contrast, "but at that time" emphasizes a specific point in the past, whereas "but then" ("but then") is a more general temporal contrast.
Can I use "but at that time" at the beginning of a sentence?
While grammatically correct, starting a sentence with "but at that time" can sometimes sound awkward. Consider rephrasing the sentence for a smoother flow, or use a different conjunction like "however" or "yet".
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested