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
tentative duration
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "tentative duration" is correct and usable in written English.
It can be used when referring to a time frame that is not fixed and may change based on circumstances or further information. Example: "The tentative duration for the project completion is set for three months, pending any unforeseen delays."
✓ Grammatically correct
Science
News & Media
Alternative expressions(15)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
The duration of the tentative plateaus was slightly different between the simulation and that observed.
Science
Fimalac said that it could only issue "tentative" guidance because of the difficulties in predicting the duration and scale of the crisis in the credit markets.
News & Media
The multi-method approach enabled the identification of potential source areas, provided a tentative age estimate of the start (and in part duration) of ash deposits and therefore improved our understanding of volcanic landscape evolution.
Science
Sheline et al. (2003) observed that longer duration of untreated depression was associated with hippocampal volume reduction, which provides some tentative evidence that antidepressants may have a neuroprotective effect.
Science
The duration, extent and purpose of the huge swindle at Parmalat remain to be determined.It is possible, however, to draw some tentative lessons from the affair.
News & Media
Her smile became tentative.
News & Media
"I was very tentative.
News & Media
Richard Hilger appeared more tentative.
News & Media
He was tentative.
News & Media
Tentative steps, maybe.
News & Media
November (tentative).
News & Media
Expert writing Tips
Best practice
When using "tentative duration", clearly state the factors that could influence changes to the estimated timeframe to manage expectations and provide context.
Common error
Avoid treating a "tentative duration" as a definitive commitment; continually reassess and communicate any necessary adjustments based on evolving circumstances.
Source & Trust
87%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "tentative duration" functions as a descriptor, where the adjective "tentative" modifies the noun "duration". It indicates that the length of time being referred to is not definitively set and is subject to change. Ludwig indicates its correctness and usability in written English.
Frequent in
Science
0%
News & Media
0%
Formal & Business
0%
Less common in
Science
0%
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
The phrase "tentative duration" is a grammatically correct and useful expression for describing a timeframe that is not yet fixed and may be subject to change. While examples of its usage are currently limited, according to Ludwig, it is still appropriate for various contexts, including science, news, and business. When employing this phrase, be sure to clarify the factors that could influence the actual duration and avoid treating it as a definitive commitment.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
provisional duration
Replaces "tentative" with "provisional", indicating that the duration is subject to change but has been initially set.
estimated duration
Focuses on the aspect of estimation rather than tentativeness, implying an approximate calculation of time.
projected duration
Similar to estimated, but suggests a forward-looking calculation of the time frame.
approximate timeframe
Uses "timeframe" instead of "duration", offering a more general term for the period.
uncertain duration
Directly expresses the lack of certainty in the duration.
flexible duration
Emphasizes the adaptability and potential for change in the duration.
preliminary duration
Highlights the initial and potentially changeable nature of the duration.
initial duration
Similar to preliminary, but focuses on the starting point of the duration.
intended duration
Focuses on the planned or hoped-for length of time.
temporary duration
Indicates that the duration is not permanent and will likely change.
FAQs
What does "tentative duration" mean?
The phrase "tentative duration" refers to an estimated timeframe that is subject to change. It indicates that the specified period is not fixed and may be adjusted based on various factors.
How to use "tentative duration" in a sentence?
You can use "tentative duration" in sentences like: "The "tentative duration" for the project is three months, but it could be longer depending on funding" or "The "tentative duration" of the experiment is two weeks, pending further data collection".
What are some alternatives to "tentative duration"?
Alternatives to "tentative duration" include "provisional duration", "estimated duration", or "projected duration", depending on the specific nuance you wish to convey.
When is it appropriate to use the phrase "tentative duration"?
It's appropriate to use the phrase "tentative duration" when discussing plans or projects where the exact timeframe is uncertain and subject to external factors or further developments.
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
4.1/5
Expert rating
Real-world application tested