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 indispensable
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'is indispensable' can be used in written English.
It is typically used to mean that something is absolutely essential or necessary. For example, "A good understanding of mathematics is indispensable for a successful career in finance."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(20)
will be assembled
is very much needed
is greatly desired
will be interrogated
is deserved
is predicated
needs refinement
is utterly crucial
deserves to be done
required to be present
will be reinvigorated
is of utmost importance
is required to be done
ought to be done
is absolutely essential
must needs
is needed
will be accelerated
is very much necessary
benefits needed
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
It is indispensable.
News & Media
None of them is indispensable.
News & Media
But no general is indispensable.
News & Media
And talent is indispensable.
News & Media
This book is indispensable.
News & Media
Every release is indispensable.
News & Media
Her cane is indispensable.
News & Media
Their work is indispensable".
News & Media
The City is indispensable.
News & Media
But Greene, too, is indispensable.
News & Media
An American role is indispensable.
News & Media
Expert writing Tips
Best practice
When using "is indispensable", ensure the context clearly establishes why the subject is so crucial. Specificity strengthens the statement.
Common error
Avoid using "is indispensable" too frequently in your writing. Overuse can dilute its impact. Consider using synonyms like "essential" or "crucial" for variety.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is indispensable" primarily functions as a predicate adjective, modifying a noun or noun phrase to indicate that it is absolutely essential or necessary. As Ludwig AI confirms, the phrase follows standard grammar rules and is widely used.
Frequent in
News & Media
45%
Science
25%
Formal & Business
15%
Less common in
Encyclopedias
3%
Reference
3%
Social Media
3%
Ludwig's WRAP-UP
In summary, the phrase "is indispensable" is a common and grammatically correct expression used to emphasize the absolute necessity of something. Ludwig AI confirms this. Its usage spans across various contexts, notably news, science, and formal business domains. While generally formal, overuse should be avoided. Consider alternatives like "is absolutely essential" or "is utterly crucial" for variety. The phrase is a powerful tool for highlighting critical importance in both writing and speech.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
is absolutely essential
Replaces "indispensable" with "absolutely essential" to emphasize necessity.
is utterly crucial
Substitutes "indispensable" with "utterly crucial" for a more emphatic tone.
is a must-have
Uses the idiomatic expression "must-have" to convey essential quality.
is of the essence
Emphasizes that something is fundamentally important or crucial.
is vitally important
Replaces "indispensable" with "vitally important" to highlight significance.
is a critical necessity
Rephrases to emphasize both the importance and the required nature of something.
is required without exception
Highlights the mandatory nature with no room for alternatives.
cannot be omitted
Focuses on the idea that something cannot be left out or excluded.
is integral to
Indicates that something forms an essential part of a whole.
is fundamental to
Stresses that something is a basic and necessary part of something else.
FAQs
How can I use "is indispensable" in a sentence?
Use "is indispensable" to emphasize that something is absolutely necessary or essential. For example, "Teamwork "is indispensable" for project success".
What can I say instead of "is indispensable"?
You can use alternatives like "is absolutely essential", "is utterly crucial", or "is a must-have depending on the context".
Which is correct, "is indispensable" or "are indispensable"?
"Is indispensable" is used with singular nouns, while "are indispensable" is used with plural nouns. For example, "Communication is indispensable" versus "Skills are indispensable".
What's the difference between "is indispensable" and "is important"?
"Is indispensable" implies something is absolutely necessary and cannot be done without, while "is important" simply means something has significance or value but may not be essential.
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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested