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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
highly unlikely that
Grammar usage guide and real-world examplesUSAGE SUMMARY
"highly unlikely that" is a perfectly correct and usable phrase in written English.
You can use it to indicate that something is highly improbable. For example: "It is highly unlikely that the current president will be re-elected in the next election."
✓ Grammatically correct
News & Media
Academia
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
60 human-written examples
Highly unlikely; that would require changing recruitment practices altogether.
News & Media
It's highly unlikely that I'll be able to play".
News & Media
"We think it is highly unlikely that he has Ebola.
News & Media
It is highly unlikely that this bothered him.
News & Media
It's highly unlikely that any outsider could pull this off".
News & Media
First, it is highly unlikely that anyone will win.
News & Media
It is highly unlikely that Green's yacht will be seized.
News & Media
But it is highly unlikely that he will play.
News & Media
It remains highly unlikely that Trump's objections will succeed.
News & Media
It seemed highly unlikely that Tanweer had been radicalised here.
News & Media
It seems highly unlikely that you can make a stutterer.
News & Media
Expert writing Tips
Best practice
Use "highly unlikely that" to express a strong degree of improbability, but avoid overusing it in formal writing. Consider alternatives for variety.
Common error
Avoid using redundant adverbs. For example, phrases like "very highly unlikely that" are unnecessarily repetitive; "highly unlikely that" is sufficient.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "highly unlikely that" functions as an adverbial clause introducer, modifying a verb or clause by expressing a strong degree of improbability or doubt. Ludwig shows that it commonly precedes a statement expressing a prediction or expectation.
Frequent in
News & Media
75%
Academia
13%
Science
12%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "highly unlikely that" is a grammatically sound phrase used to express a strong sense of improbability. As Ludwig AI confirms, the phrase is perfectly acceptable in written English. It's frequently encountered in news and media, academic papers, and scientific literature. While highly versatile, writers should avoid redundant phrasing and consider alternative expressions to maintain variety. By understanding its function, purpose, and register, you can effectively incorporate "highly unlikely that" into your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
particularly unlikely that
Emphasizes a specific reason for the improbability.
extraordinarily unlikely that
Intensifies the degree of improbability.
exceptionally unlikely that
Highlights the exceptional nature of the improbability.
incredibly unlikely that
Uses "incredibly" to amplify the unlikelihood.
exceedingly unlikely that
Similar to "extraordinarily" but with a slightly different tone.
highly doubtful that
Expresses strong doubt about the possibility.
highly improbable that
Replaces "unlikely" with the more formal "improbable".
highly impossible that
Replaces "unlikely" with "impossible" for stronger emphasis.
highly uncertain that
Focuses on the uncertainty surrounding the event.
highly unexpected that
Shifts focus to the element of surprise if it were to occur.
FAQs
How can I use "highly unlikely that" in a sentence?
You can use "highly unlikely that" to express a strong degree of improbability. For instance, "It's highly unlikely that the project will be completed on time."
What are some alternatives to "highly unlikely that"?
Alternatives include "particularly unlikely that", "extraordinarily unlikely that", or "highly doubtful that", depending on the specific nuance you want to convey.
Is it correct to say "very highly unlikely that"?
While understandable, "very highly unlikely that" is somewhat redundant. It's generally better to simply use "highly unlikely that" for a more concise expression of improbability.
What's the difference between "unlikely that" and "highly unlikely that"?
"Unlikely that" suggests a general improbability, whereas "highly unlikely that" indicates a much stronger degree of improbability, almost to the point of being considered impossible.
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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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested