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
at latest
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'at latest' is correct and usable in written English.
You can use 'at latest' to mean that something should happen at the very latest by a specified deadline. For example: "You must complete the project by Friday at the latest."
✓ Grammatically correct
Science
News & Media
Formal & Business
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
Farmers get peek at latest agricultural research.
Academia
At latest postoperative follow-up, follow-up was 89%.
Science
At latest count, there were 6,000 registered joint ventures.
News & Media
At latest count 13.3% of the Australian population smoke daily.
News & Media
A comparison group of 44 patients with DILV was matched by age at latest follow-up.
At latest notice, there will not be beach volleyball at these Millrose Games.
News & Media
At latest count, more than 70 companies were on that list.
News & Media
There was a significant increase in mean postoperative weight percentiles at latest follow-up (p = 0.004).
Academia
The mean preoperative Knee Society Knee Score was 48 points compared with 96 points at latest follow-up.
Science
At latest report, the search area had reached 289,080 square nautical miles.
News & Media
Experimentation was terminated at latest 96 h post fertilization (hpf).
Expert writing Tips
Best practice
When setting deadlines, use "at latest" to provide a clear and non-negotiable final point for task completion. This helps manage expectations and ensures timely results.
Common error
Avoid using "at latest" when a range or flexibility is intended. The phrase implies a firm boundary, so ensure it aligns with your actual requirements. If there's wiggle room, opt for less restrictive language.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "at latest" functions as an adverbial phrase, modifying a verb or clause to specify a deadline or the upper limit of a permissible timeframe. It indicates the last possible moment for something to occur, as confirmed by Ludwig examples.
Frequent in
Science
43%
News & Media
33%
Formal & Business
10%
Less common in
Academia
8%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the adverbial phrase "at latest" is a grammatically correct and commonly used expression for setting deadlines or upper limits. According to Ludwig, it is versatile and suitable for both formal and informal contexts. Its frequent appearance in scientific, news, and business sources underscores its wide applicability. While interchangeable with alternatives like "no later than" and "by the deadline", it's crucial to ensure the phrase aligns with the intended level of flexibility. Overall, mastering the use of "at latest" enhances clarity and effectiveness in written communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
at the latest
Adding "the" for emphasis and formality.
no later than
Using different wording to express the same time constraint.
by the deadline
Specifying "deadline" for a more concrete time constraint.
at the very latest
Adding "very" to emphasize the finality of the deadline.
by the due date
Replacing "deadline" with the synonym "due date".
not exceeding
Shifting the focus to an upper limit rather than a deadline.
at the outside
Using a less common idiom to express an upper boundary.
as a cutoff
Treating the deadline as a point that cannot be exceeded.
maximally
Using a more formal term to indicate the upper limit of something.
by the end
Indicates a final limit without specifying a specific value.
FAQs
How to use "at latest" in a sentence?
Use "at latest" to indicate the final deadline or upper limit for something. For example, "The report must be submitted by Friday at latest".
What can I say instead of "at latest"?
You can use alternatives like "no later than", "by the deadline", or "at the very latest" depending on the context.
Which is correct, "at latest" or "at the latest"?
Both "at latest" and "at the latest" are correct, but "at the latest" is generally considered more formal and emphasizes the deadline slightly more.
What's the difference between "at latest" and "at earliest"?
"At latest" indicates the final possible time for something, while "at earliest" specifies the first possible time. They are antonyms used to define a time range.
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
4.5/5
Expert rating
Real-world application tested