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
prior letter
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "prior letter" is correct and usable in written English.
It can be used to refer to a letter that was sent or received before the current correspondence. Example: "In reference to your prior letter, I would like to address the concerns you raised."
✓ 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
5 human-written examples
In this study, we used an experimental training design to examine whether either prior letter awareness or prior phonemic awareness directly assists preliterate children in subsequently learning letter sound correspondences.
Dietrick did not respond to a request for comment on Friday but did note in a prior letter to Harder that "Gawker will vigorously defend itself and its right to report on a topic of interest involving a presidential candidate" if sued.
News & Media
12 00 p.m.: This article was updated with details about a prior letter sent to Wells Fargo by the Senate Banking Committee.
News & Media
Dante had already shown his familiarity with the myth of Myrrha in a prior letter to Emperor Henry VII, which he wrote on 17 April 1311.
Wiki
As previously stated in a prior letter to the editor (Johnson et al. 2004), at all times throughout this research, the authors were free to design, conduct, interpret, and publish the research without compromise by any controlling sponsor as a condition of review or publication.
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
Dwellings were randomly sampled, with prior letters sent to the selected addresses, and house calls between November 2009 and March 2010.
Prior's letter quickly convened a group of concerned parents, governors and residents, who have set up the campaign Excellent Education for Everyone and meet regularly in his boardroom.
News & Media
It's is not the first call to action by AI scientists; it builds on prior open letters on autonomous weapons in 2015 and 2017.
News & Media
Patients who were diagnosed with stages I, II, or III at least 6 months prior receive letters describing the study, followed by phone calls to assess interest and screen for eligibility.
Science
[A Save the Children director] will be reviewing the letter prior to it being sent.
News & Media
A spokesman for Prince Nasser did not respond to requests for comment on the contents of the letter prior to publication.
News & Media
Expert writing Tips
Best practice
When referring to a "prior letter", ensure that the context clearly indicates which specific letter you are referencing, especially if multiple letters have been exchanged.
Common error
Avoid using "prior letter" without explicitly stating the date or subject of the letter, as this can cause confusion and require the recipient to search through past communications to identify the letter in question.
Source & Trust
85%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "prior letter" functions as a noun phrase modifying "letter", indicating that the letter in question precedes the current communication in time. It's used to refer to a past instance of written correspondence. Ludwig confirms this is a correct and usable phrase.
Frequent in
Science
40%
News & Media
40%
Academia
20%
Less common in
Formal & Business
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "prior letter" is a grammatically correct and usable way to refer to a letter that came before the current communication. While relatively infrequent, as indicated by Ludwig, it's suitable for various contexts, including science, news, and academia. When using "prior letter", ensure clear context to avoid ambiguity. Alternatives like "previous letter" or "earlier letter" can be used interchangeably. Ludwig AI confirms the phrase's validity and provides diverse examples of its application in real-world scenarios.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
previous letter
Replaces "prior" with "previous", maintaining the meaning of a letter that came before.
earlier letter
Substitutes "prior" with "earlier", indicating a letter from a time before the present.
letter before
Uses a more straightforward phrasing to indicate a letter received previously.
aforementioned letter
Refers back to a letter already mentioned, suitable when the letter has been explicitly discussed.
preceding letter
A more formal synonym for "prior letter", indicating the letter that came immediately before.
earlier correspondence
Replaces "letter" with the broader term "correspondence", encompassing emails or other written communication.
letter sent previously
Emphasizes the act of sending the letter at an earlier time.
initial letter
Suggests the first letter in a series of communications.
original letter
Implies the first or primary letter, especially when revisions or follow-ups exist.
former letter
Similar to "previous letter" but can also imply a letter from a more distant past.
FAQs
How can I use "prior letter" in a sentence?
You can use "prior letter" to refer to a previous communication. For example, "In response to your "prior letter" of July 15th, we have taken the necessary actions."
What is a good substitute for "prior letter"?
Alternatives to "prior letter" include "previous letter", "earlier letter", or "aforementioned letter" depending on the context.
Is "prior letter" formal or informal?
"Prior letter" is suitable for both formal and neutral contexts. It is commonly used in business, legal, and academic settings.
Is there a difference between "prior letter" and "previous letter"?
The terms "prior letter" and "previous letter" are largely interchangeable. Both refer to a letter that was sent or received before the current correspondence. "Previous" is slightly more common in everyday usage.
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
85%
Authority and reliability
4.1/5
Expert rating
Real-world application tested