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
uncertainty on whether
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'uncertainty on whether' is correct and usable in written English.
You can use it when discussing an unclear or ambiguous situation or decision. For example, "There is a lot of uncertainty on whether the government will approve this project."
✓ Grammatically correct
News & Media
Science
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
11 human-written examples
And it fell apart in 1861 under the weight of its uncertainty on whether the United States was a collection of sovereign states or one nation -- and even more so based on its moral bankruptcy on the issue of slavery.
News & Media
"Global businesses and investors are retreating both because of the uncertainty on whether they might be paid someday in a devalued currency," she wrote "and because domestic consumption has plunged after three years of painful austerity".
News & Media
Global businesses and investors are retreating both because of the uncertainty on whether they might be paid someday in a devalued currency, and because domestic consumption has plunged after three years of painful austerity.
News & Media
A30 Panel Ponders 9/11 Suspect A panel of federal appeals judges voiced uncertainty on whether Zacarias Moussaoui could receive a fair trial if the Bush administration continued to deny him access to captured terrorists whose testimony might bolster his defense.
News & Media
There was some level of uncertainty on whether the lesson would turn out well.
Time discounting and perhaps some uncertainty on whether the sandwich was actually going to be delivered could rationalize this result.
Human-verified similar examples from authoritative sources
Similar Expressions
49 human-written examples
The judges cited "enduring uncertainties" on whether the $31 million project met urban planning requirements, including for the construction of a 450-place parking lot, the newspaper Le Figaro reported.
News & Media
Indeed, many of them hinge on the uncertainty of whether they will even survive the movie.
News & Media
Late on August 21, about 24 hours prior to its closest approach, the Central Pacific Hurricane Center issued a hurricane warning for uninhabited territory of Johnston Island, due to the uncertainty of whether anyone was on the island.
Wiki
As a result, one can address selective sources of uncertainty depending on whether low or high flows (say) are of interest.
Science
There was still uncertainty on Thursday about whether Maulana Masood Azhar, the leader of Jaish-e-Muhammad, another militant group, had been placed under house arrest, and whether the Lashkar commander suspected of running the Mumbai operation, Zaki ur-Rehman Lakhvi, had been arrested.
News & Media
Expert writing Tips
Best practice
When using "uncertainty on whether", ensure the context clearly indicates the specific situation or decision that is uncertain. This helps avoid ambiguity and ensures your message is easily understood.
Common error
Avoid using "uncertainty on whether" when the uncertainty isn't specifically about a binary choice. If the uncertainty is more general, consider using "uncertainty about" or "uncertainty regarding" followed by the subject of the uncertainty.
Source & Trust
84%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "uncertainty on whether" functions as a prepositional phrase, typically following a verb or noun, to introduce a clause expressing doubt or lack of clarity regarding a specific condition or outcome. As Ludwig AI highlights, this expression is suitable for describing situations where outcomes are not yet determined.
Frequent in
News & Media
35%
Science
35%
Formal & Business
10%
Less common in
Wiki
10%
Academia
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "uncertainty on whether" is a grammatically sound phrase used to express doubt or a lack of clarity about a specific condition. As confirmed by Ludwig AI, its frequency is uncommon, it is generally acceptable in many documents, finding applications across news, scientific, and formal business contexts. When using the phrase, ensure that the context clearly defines the subject of the uncertainty to avoid ambiguity. Alternatives such as "doubt regarding whether" or "ambiguity about whether" can offer subtle variations in meaning. Steer clear of using "uncertainty on whether" for general uncertainty that does not involve a binary choice.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
doubt regarding whether
Replaces "uncertainty" with "doubt" and rephrases the preposition.
ambiguity about whether
Substitutes "uncertainty" with "ambiguity" and changes the preposition.
lack of clarity on whether
Replaces "uncertainty" with a phrase indicating a deficiency of clearness.
indecision concerning whether
Changes "uncertainty" to "indecision" and alters the preposition.
confusion about if
Replaces "uncertainty" with "confusion" and alters the conjunction from "whether" to "if".
question of whether
Uses "question" instead of "uncertainty", focusing on the interrogative aspect.
open to debate whether
Highlights the debatable nature of the issue, moving away from uncertainty.
unclear if
A more direct and concise way of expressing uncertainty, replacing "whether" with "if".
it is not certain if
Expresses the lack of certainty directly using a full sentence structure.
subject to speculation whether
Emphasizes the speculative nature of the issue, shifting focus slightly from uncertainty.
FAQs
How can I use "uncertainty on whether" in a sentence?
You can use "uncertainty on whether" to express doubt or lack of clarity about a particular situation. For example, "There is significant uncertainty on whether the project will be completed on time."
What are some alternatives to using "uncertainty on whether"?
Alternatives include "doubt regarding whether", "ambiguity about whether", or "lack of clarity on whether", depending on the specific nuance you want to convey.
Is it correct to say "uncertainty of whether" instead of "uncertainty on whether"?
While "uncertainty on whether" is acceptable, "uncertainty about whether" or "uncertainty regarding whether" might be preferred depending on the specific context. The choice often comes down to stylistic preference and the flow of the sentence.
What's the difference between "uncertainty about" and "uncertainty on" when discussing future events?
"Uncertainty about" generally refers to a broader lack of knowledge, while "uncertainty on" specifies that the uncertainty revolves around a distinct question with binary outcomes. For example, "There is uncertainty about the future" versus "There is uncertainty on whether the bill will pass."
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
84%
Authority and reliability
4.3/5
Expert rating
Real-world application tested