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
one extra month
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "one extra month" is correct and usable in written English.
It can be used when referring to an additional month added to a time period or deadline. Example: "Due to unforeseen circumstances, we have decided to grant you one extra month to complete the project."
✓ Grammatically correct
Science
News & Media
Alternative expressions(4)
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
3 human-written examples
Seven patients (one from the treatment group) had vitamin B12 levels less than 125 pM/l at one month and received oral vitamin B12 supplementation for one extra month.
Science
If the same candidate wins both contests, he or she would take office in the 113th Congress in January with a seniority edge over other incoming freshmen — slight but significant from that one extra month, and enough in the pecking order to make a possible difference in committee assignments.
News & Media
The agent said her credit wasn't quite what it needed to be, but then relented and said that leaving one extra month of security deposit would seal the deal.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
51 human-written examples
One to make time for on that extra June bank holiday.
News & Media
But I think good speculation is that they went out of their way to give themselves an extra month because, one, they recognized the statutory command for expedition and, two, the onset of the election season".
News & Media
Five gigabytes for $60 per month, then one extra gigabyte costs $500?
News & Media
We assumed four extra measurements in the first month and one extra measurement after an adverse event.
An increasing number of studies have examined the results: an analysis of children in Massachusetts released last month said drinking one extra soft drink a day gave children a 60percentt greater chance of becoming obese.
News & Media
Although the rule was approved in December, entered into the Federal Register in February, and under ordinary circumstances would have taken effect in April, "Restoring Internet Freedom" had one extra step that needed to be taken.
News & Media
In one case I had to promise to pay an extra month's rent as security.
News & Media
But by making just one extra payment of $100, you'd pay off your loan one month faster and knock off $65 in interest.
News & Media
Expert writing Tips
Best practice
When using "one extra month", ensure the context clearly establishes the original time period being extended. For example, specify the project deadline before offering "one extra month" to complete it.
Common error
Avoid using "one extra month" without specifying the start or end point of the extension. Saying "we'll give you one extra month" without clarifying which period is being extended can create confusion.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "one extra month" functions as an adjectival phrase modifying the noun "month". It specifies the quantity and quality (additional) of the month being referred to. As Ludwig AI points out, the phrase is usable in written English.
Frequent in
News & Media
50%
Science
33%
Formal & Business
17%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "one extra month" is a grammatically sound phrase used to indicate an additional month of time, as validated by Ludwig AI. It's most commonly found in news and media, as well as scientific contexts. While it's not the most frequently used phrase, it is perfectly acceptable and understood across a range of registers. When using "one extra month", make sure to provide context to what period this is referring to. Alternatives like "an additional month" or "a supplementary month" can be used for more formal tones.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
an additional month
Replaces "one extra" with "an additional" to offer a slightly more formal tone.
a supplementary month
Substitutes "extra" with "supplementary", emphasizing the added nature of the month.
an extended month
Replaces "extra" with "extended", highlighting the prolonged duration.
a further month
Uses "further" in place of "extra" for a slightly different emphasis on addition.
one month more
Rearranges the words to emphasize the addition of time.
an additional four weeks
Converts month to weeks to provide exact time and replaces "one extra".
a bonus month
Replaces "extra" with "bonus" to imply an unexpected or favorable addition of time.
a month extension
Rephrases the expression to focus on the act of extending the time period.
one month on top
Uses a more informal expression to indicate an additional month.
a month in addition
Rephrases the expression to focus on the act of adding the time period.
FAQs
How can I use "one extra month" in a sentence?
You can use "one extra month" to indicate an extension of time, such as, "We are granting you "one extra month" to finish the project."
What's a more formal way to say "one extra month"?
A more formal way to say "one extra month" is "an additional month", which is suitable for professional or academic contexts.
Is it better to specify the exact dates when offering "one extra month"?
Yes, to avoid confusion, it's best practice to specify the exact start and end dates of the "one extra month", rather than just stating the additional time period.
How does "one extra month" compare to "another month"?
"One extra month" and "another month" are largely interchangeable, but "one extra month" emphasizes that it's specifically an addition to a previously agreed-upon timeframe, whereas "another month" is more general.
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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested