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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
could not recall
Grammar usage guide and real-world examplesUSAGE SUMMARY
"could not recall" is correct and usable in written English.
You can use it when you are trying to describe a situation in which someone is having trouble remembering something. For example, "John tried to remember the name of the restaurant but he could not recall it."
✓ Grammatically correct
News & Media
Science
Formal & Business
Wiki
Alternative expressions(20)
could not remember
did not remember
could not recollect
had no recollection
was unable to remember
I can't remember
failed to recall
I don't recall
it slipped my mind
could not fetch
could not retrieve
could not recover
could not saw
could not are
could not move
could not breathe
could not run
could not cook
could not resist
could not vote
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
59 human-written examples
Denard could not recall any other accident.
News & Media
I could not recall when the A.C.L.U.
News & Media
He could not recall the conversation.
News & Media
Naanee could not recall playing against Gates.
News & Media
He could not recall the full details.
News & Media
But Giokas could not recall Pheidippides.
News & Media
How many exactly, Mr. Casley could not recall.
News & Media
Thole could not recall having done that before.
News & Media
The complainant said she could not recall such a conversation.
News & Media
Mr. Cardillo said he could not recall whether he had.
News & Media
And Bush, when asked, could not recall one error.
News & Media
Expert writing Tips
Best practice
When using "could not recall" in formal writing, ensure the context clearly indicates the reason for the lack of memory, such as time elapsed, stress, or a specific condition. If you are referencing multiple situations that the subject cannot recall, use a structure such as "On multiple occasions, the witness could not recall the events leading up to the incident."
Common error
Avoid using "could not recall" to describe a current, ongoing inability to remember. Instead, use "cannot recall" or "can't recall" for present-tense situations. For example, "I cannot recall where I put my keys" is correct, while "I could not recall where I put my keys" implies a past situation.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "could not recall" functions as a verb phrase indicating a past inability to remember something. It is often used to describe a situation where someone attempted to remember but failed. This is supported by Ludwig's examples, which show it used in news reports, scientific articles, and other formal contexts.
Frequent in
News & Media
78%
Science
12%
Wiki
5%
Less common in
Formal & Business
3%
Academia
1%
Reference
1%
Ludwig's WRAP-UP
In summary, "could not recall" is a versatile and grammatically sound phrase used to express an inability to remember something in the past. As Ludwig AI confirms, it's commonly found in news reports and various written sources. While generally appropriate for formal and neutral contexts, remember to select other alternatives in informal settings, such as "I can't remember". Ensure correct tense usage and context to avoid misinterpretations, and use more specific alternatives depending on the intent to highlight had no recollection, could not recollect, or was unable to remember. When the memory issue is about to fail an attempt you can use "failed to recall". With these nuances in mind, you can confidently and effectively employ "could not recall" in your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
I don't recall
A first-person perspective, placing the inability to remember directly on the speaker.
I can't remember
A first-person perspective, using remember instead of recall.
could not remember
Uses "remember" instead of "recall", offering a slightly more common and straightforward alternative.
did not remember
Emphasizes the lack of memory as a past action or state.
could not recollect
Replaces "recall" with "recollect", providing a more formal synonym.
had no recollection
Shifts the structure to emphasize the absence of memory as a possession.
failed to recall
Emphasizes the failure in the attempt to remember.
was unable to remember
Uses "unable" to soften the statement, indicating a lack of ability rather than outright failure.
could not bring to mind
Emphasizes the effort involved in trying to remember something.
it slipped my mind
Indicates forgetfulness in a more casual and idiomatic way.
FAQs
What is the difference between "could not recall" and "could not remember"?
While both phrases express an inability to remember, "could not recall" is generally considered more formal than "could not remember". The choice depends on the context and desired level of formality.
When should I use "could not recall" instead of "did not remember"?
"Could not recall" implies a more active attempt to remember something that failed, whereas "did not remember" simply states a lack of memory without necessarily implying an attempt to recall.
Is "could not recall" appropriate for informal conversation?
While grammatically correct, "could not recall" might sound overly formal in casual conversation. Alternatives like "don't remember" or "can't recall" may be more suitable.
What are some synonyms for "could not recall" that I can use in my writing?
Synonyms include "could not recollect", "had no recollection", "was unable to remember", and "could not bring to mind", depending on the specific nuance you want to convey.
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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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested