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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
until period
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "until period" is not correct and usable in written English.
It seems to be an incomplete expression and lacks clarity in meaning. Example: "You should keep working on the project until period."
⚠ May contain grammatical issues
Science
News & Media
Alternative expressions(20)
until dinner
until the end of the period
until tonight
until dusk
until hour
until nighttime
through the late afternoon
until the deadline
until twilight
in the evening
until eve
until sundown
until midnight
until evening
during the period
until completion
until sunset
till nightfall
until night time
throughout the day
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
Until period".
News & Media
The Kalman filter considers the estimation of the expected value of the x t vector, conditional to the information available until period t.
jIt is automatically satisfied, given the MLRP, if I 2 ' = 0. kNote that because of the absence of observations on the managerial signal in period 1 (this is not visible until period 2) we cannot examine the impact of track record at this stage.
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
The Post-Nomadic Period (until 1763).
'It sounds ridiculously naïve, but until this period I didn't know that light changed the colour of your skin.
News & Media
"I'd go to school until fourth period," said Shinikwa, "I knew they wouldn't call home".
News & Media
The action was sustained until prolong period.
Science
We were absolutely brilliant until that period at the end.
News & Media
This measure captures the tradeoff between retiring today and working until a period with much higher SSW.
Science
In the same manner as before, we evaluate matches against news articles during the 2013-07-01 until 2013-11-30 period.
Science
Up until this period, British football existed as a sort of craft industry.
News & Media
Expert writing Tips
Best practice
When indicating a duration, specify a clear ending point, like "until the end of the period" or "until the deadline", to avoid ambiguity.
Common error
Avoid using "until period" as it lacks specific context. Instead, clarify the ending point using precise terms such as "until the end of the quarter" or "until the review period concludes."
Source & Trust
84%
Authority and reliability
2.2/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "until period" functions as a prepositional phrase attempting to denote a time frame leading up to a specific point. However, its usage is grammatically questionable, as confirmed by Ludwig's analysis, which suggests the expression is incomplete and lacks clarity.
Frequent in
Science
33%
News & Media
33%
Wiki
33%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "until period" is grammatically incorrect and lacks the clarity required for effective communication. Ludwig's analysis indicates that it's an incomplete expression. While the phrase aims to define a duration, it necessitates clearer specification of the endpoint. Alternatives such as "until the end of the period" or "up to the period" provide more precise and grammatically sound means of expressing the intended meaning. Therefore, writers should avoid "until period" in favor of more descriptive temporal references.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
until the end of the period
Adds "end of" for clarity, specifying that the duration lasts to the period's conclusion.
up to the period
Replaces "until" with "up to", focusing on the limit of a specific time.
up until the timeframe
Replaces "period" with "timeframe" as a more general term.
until that time
Replaces 'period' with a more general indication of time
throughout the period
Shifts focus from the endpoint to the entire duration of the period.
leading up to the period
Focuses on the events immediately preceding the mentioned period.
during the period
Similar to "throughout the period", but can imply events happening within the specified time.
until the deadline
Specifies a deadline as the ending point, useful in professional contexts.
prior to the period
Indicates something happening earlier to the indicated period.
before the period
Indicates a time frame leading up to the start of the indicated period.
FAQs
What is a better way to say "until period"?
Instead of "until period", consider using phrases like "until the end of the period", "up to the period", or "throughout the period" for better clarity.
Is it grammatically correct to say "until period"?
No, the phrase "until period" is not grammatically correct in standard English. It's better to specify the endpoint clearly, such as "until the end of the evaluation period".
What does "until period" mean?
The intended meaning of "until period" is to indicate the duration leading up to a specific point in time. However, it is vague and requires more specific phrasing to be clear.
How can I use "until period" correctly in a sentence?
It is recommended to avoid "until period" and rephrase for clarity. For example, instead of saying "The data was collected until period", say "The data was collected "until the end of the study"".
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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
84%
Authority and reliability
2.2/5
Expert rating
Real-world application tested