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
is unthinkable
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is unthinkable" is correct and commonly used in written English.
It is typically used to describe something that is impossible to imagine or believe. Example: "The idea of destroying the planet for profit is unthinkable to most people."
✓ Grammatically correct
News & Media
Science
Alternative expressions(20)
is not an option
is unconscionable
passes understanding
beggars the issue
is unlikely
is out of the question
beggars the importance
is absurd
staggers the mind
is unimaginable
boggles the mind
is preposterous
is inconceivable
is unattainable
beggars the imagination
strains credulity
beggars the type
is inexplicable
is unbelievable
defies belief
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
59 human-written examples
This is unthinkable.
News & Media
A defeat is unthinkable.
News & Media
Anything less is unthinkable.
News & Media
Defeat is unthinkable.
News & Media
But failure is unthinkable.
News & Media
A car is unthinkable.
News & Media
Here, that is unthinkable.
News & Media
Nothing is unthinkable.
News & Media
Walking upright is unthinkable.
News & Media
Anything else is unthinkable".
News & Media
It is unthinkable".
News & Media
Expert writing Tips
Best practice
Use "is unthinkable" to express strong disagreement or impossibility, making sure the context clearly indicates why the subject is unacceptable or beyond consideration.
Common error
Avoid using "is unthinkable" when a milder expression like "unlikely" or "improbable" would suffice. Save it for situations where the subject truly defies imagination or acceptability.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is unthinkable" primarily functions as a predicate adjective, describing a noun or idea as being beyond consideration or imagination. Ludwig AI confirms the phrase's proper usage and common occurrence in various contexts.
Frequent in
News & Media
87%
Science
6%
Formal & Business
4%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "is unthinkable" is a powerful expression used to convey that something is impossible to imagine or accept. Ludwig AI confirms its grammatical correctness and frequent usage across various domains. It functions as a predicate adjective, carrying a strong sense of disbelief or disapproval. While the phrase is versatile, it's best reserved for situations where the subject truly defies imagination or acceptability, avoiding overuse in weaker contexts. Alternatives like "is inconceivable" or "is unimaginable" can provide nuanced variations in meaning. Primarily found in News & Media, "is unthinkable" maintains a neutral register, adding emphasis to journalistic and opinion-based writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
is inconceivable
This alternative emphasizes the impossibility of conceiving or imagining something.
is unimaginable
This alternative highlights the difficulty or inability to imagine a particular scenario.
is not an option
This alternative indicates that something is unacceptable or not a viable choice.
is out of the question
This alternative suggests that something is definitely not allowed or possible.
is beyond belief
This alternative stresses the incredibility of something, making it hard to believe.
is not to be considered
This alternative implies that something should not be entertained or taken into account.
is preposterous
This alternative indicates that something is utterly absurd or ridiculous.
is ludicrous
This alternative conveys that something is laughable or foolish.
is the last thing one would expect
This alternative emphasizes how surprising and unexpected something is.
is the height of absurdity
This alternative suggests that something is extremely ridiculous or nonsensical.
FAQs
How can I use "is unthinkable" in a sentence?
You can use "is unthinkable" to express that something is impossible to imagine or accept. For example, "The idea of betraying my friends "is unthinkable"".
What can I say instead of "is unthinkable"?
You can use alternatives like "is inconceivable", "is unimaginable", or "is out of the question" depending on the context.
Which is correct, "is unthinkable" or "was unthinkable"?
Both are correct, but they are used in different tenses. "Is unthinkable" refers to something that is currently impossible to imagine or accept, while "was unthinkable" refers to something that was impossible to imagine or accept in the past.
What's the difference between "is unthinkable" and "is unlikely"?
"Is unthinkable" expresses a strong sense of impossibility or unacceptability, while "is unlikely" simply suggests that something is improbable but still possible. The former conveys a much stronger sentiment than the latter.
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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested