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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
ought not to exist
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "ought not to exist" is correct and usable in written English.
It can be used to express a moral or philosophical stance that something should not be present or should not occur. Example: "In a just society, inequality ought not to exist."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(2)
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
4 human-written examples
Many Westerners seem to ignore these clearly expressed "irrational" preferences, because in a sensible world they ought not to exist.
News & Media
A good chunk of the series is filmed on or near this route and the landscape is startling, as if it ought not to exist outside a child's imagination.
News & Media
It suggests that these movies really ought not to exist at all, but if they must exist, let them feature gorgeous young women primed to appeal to male filmgoers' base instincts.
News & Media
… It adds a quiver to our rhetorical defense against some of those who believe that public pension plans ought not to exist".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
The point is rather that whether there are mereological (or ordinary) objects ought not to be prejudged by stipulating they exist within some framework nor can it be resolved satisfactorily by this means.
Science
Expectations existed that no rigid time constraints be placed upon students by learning activities; students' time ought not to be obstructed for any reason, particularly demands to participate in synchronous online communication, assessment completion, or exam preparation.
They ought not to be.
News & Media
That ought not to be impossible.
News & Media
That ought not to be too hard.
News & Media
His claim ought not to be ridiculous.
News & Media
This ought not to be surprising.
News & Media
Expert writing Tips
Best practice
Use "ought not to exist" to express a strong moral or philosophical opposition to something's presence or occurrence. Ensure the context clearly conveys the reason for this opposition.
Common error
Avoid using "ought not to exist" when a weaker expression of preference is sufficient. "Ought" carries a strong implication of moral or philosophical necessity, so ensure the situation warrants such forcefulness.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "ought not to exist" functions as a modal verb phrase expressing a strong normative judgment. According to Ludwig, it indicates a belief that something should not be present due to moral or philosophical reasons. It suggests a sense of disapproval or ethical objection to something's existence.
Frequent in
News & Media
40%
Science
30%
Encyclopedias
7%
Less common in
Formal & Business
7%
Wiki
7%
Reference
2%
Ludwig's WRAP-UP
In summary, the phrase "ought not to exist" is a grammatically sound modal verb phrase used to express a strong moral or philosophical objection to something's existence. As Ludwig AI points out, it conveys a belief that something should not be present due to fundamental reasons. While not overly common, it appears in various contexts, particularly in news, scientific, and encyclopedic sources, reflecting a neutral to formal register. Related phrases include "should not exist" and "must not exist", offering varying degrees of formality and emphasis. When employing this phrase, ensure that the context warrants the strong normative judgment it implies.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
Should not exist
Replaces "ought" with "should", making it slightly less formal.
Must not exist
Uses "must" for a stronger sense of prohibition or necessity.
Is not supposed to exist
Emphasizes expectation or regulation against existing.
Has no right to exist
Adds a moral or ethical dimension to the non-existence.
Should be abolished
Suggests a need for active removal or termination.
Is unacceptable
Focuses on the unacceptability of the existence.
Is untenable
Highlights the unsustainable or indefensible nature of existing.
Is undesirable
Emphasizes the lack of desirability for something to exist.
Is illegitimate
Expresses that something is not in accordance with the law.
Is not permissible
Focuses on the impermissibility for something to exist.
FAQs
How can I use "ought not to exist" in a sentence?
Use "ought not to exist" to express a belief that something should not be present. For example, "In a just society, inequality "ought not to exist"."
What's a less formal way to say "ought not to exist"?
You can use alternatives like "should not exist" or "is not supposed to exist" depending on the context.
Is "ought not to exist" the same as "does not exist"?
No, ""ought not to exist"" implies a moral or philosophical judgment about something that may or may not exist, while "does not exist" is a statement of fact.
What does it mean when someone says something "ought not to exist"?
It means they believe that thing is fundamentally wrong or undesirable and should not be present, even if it currently does exist. The phrasing suggests a strong disapproval or ethical objection.
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested