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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
is unsustainable
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is unsustainable" is correct and usable in written English.
It can be used to describe a situation, practice, or resource that cannot be maintained over the long term without causing harm or depletion. Example: "The current fishing practices in the region are unsustainable and threaten the local fish populations."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(20)
is not tenable
cannot be detained
is beyond bearing
has no future
cannot be estimated
cannot be maintained
is not feasible
cannot be analysed
cannot continue
cannot be consolidated
cannot be assayed
cannot be suggested
is unaffordable
remains uncertain
cannot be known
is more than one can bear
is not maintainable
cannot be retained
cannot be initiated
is on borrowed time
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
Such indebtedness is unsustainable.
News & Media
It is unsustainable.
News & Media
This is unsustainable.
News & Media
"That is unsustainable".
News & Media
This discrepancy is unsustainable.
News & Media
This combination is unsustainable.
News & Media
This gap is unsustainable.
Now it is unsustainable.
News & Media
Everyone knows it is unsustainable.
News & Media
Stalemate is unsustainable.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
Such attitudes are unsustainable.
News & Media
Expert writing Tips
Best practice
When using "is unsustainable", ensure you clearly articulate why something cannot be maintained. Providing specific reasons strengthens your argument and adds credibility.
Common error
Avoid using "is unsustainable" as a vague, generalized critique. Instead, provide concrete evidence or data to support your claim. For example, instead of saying "the project is unsustainable", specify "the project is unsustainable due to a lack of funding and inadequate resources."
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is unsustainable" functions as a predicate adjective, describing a subject's inability to be maintained at its current rate or level. As Ludwig AI confirms, it is used to express that a situation, resource use, or practice cannot continue indefinitely without negative consequences.
Frequent in
News & Media
61%
Academia
20%
Science
19%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
1%
Ludwig's WRAP-UP
In summary, the phrase "is unsustainable" is a common and grammatically correct way to describe something that cannot be maintained in the long term. Ludwig AI confirms its validity. It's frequently used in news, academic, and scientific contexts to express concern about practices or situations that may lead to negative outcomes. For effective writing, remember to provide context by explaining why something is unsustainable and avoid using it as a vague critique. Alternatives include "cannot be maintained" and "is not viable". By understanding its nuances and usage patterns, you can use "is unsustainable" effectively in your own writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
cannot be maintained
Focuses on the inability to keep something at its current level or state.
is not viable
Emphasizes the lack of practical applicability or ability to succeed.
is not feasible
Highlights the impracticality or impossibility of achieving something.
cannot continue
Directly addresses the cessation of an activity or process.
is not tenable
Suggests that a position or situation is indefensible or cannot be maintained.
is not supportable
Implies that something lacks the resources or justification to continue.
is bound to fail
Emphasizes the inevitability of a negative outcome or collapse.
is destined to collapse
Highlights the eventual breakdown or failure of a system or structure.
is doomed to end
Implies that a negative conclusion is unavoidable.
is running out of time
Focuses on the limited timeframe available before a negative outcome occurs.
FAQs
What does it mean when something "is unsustainable"?
When something "is unsustainable", it means that it cannot be maintained at its current rate or level indefinitely. This often implies that it will eventually lead to negative consequences or collapse.
How to use "is unsustainable" in a sentence?
You can use "is unsustainable" to describe practices, systems, or situations that cannot be maintained in the long term. For example: "The current rate of resource consumption "is unsustainable"."
What can I say instead of "is unsustainable"?
You can use alternatives like "cannot be maintained", "is not viable", or "is not feasible" depending on the context.
What's the difference between "is unsustainable" and "is inefficient"?
"Is unsustainable" implies that something cannot continue indefinitely, often due to resource depletion or negative consequences. "Is inefficient", on the other hand, means that something wastes resources or time but may still be able to continue. A process can be inefficient without being unsustainable, and vice versa.
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested