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
indispensible
Grammar usage guide and real-world examplesUSAGE SUMMARY
"indispensible" is a correct and usable word in written English.
It can be used when referring to something that is absolutely necessary or essential, or to describe someone or something that is considered to be extremely useful. Example: The organization's volunteer team was an indispensible part of their success.
⚠ May contain grammatical issues
News & Media
Encyclopedias
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
It's not a sentimental bond – it's an indispensible bond.
News & Media
Last week the department issued an appeal to would-be senders of those articles of use and fancy which have become an indispensible adjunct to the celebration of the 14th, requesting them to post their missives as early as possible, Saturday night being recommended as the most convenient time.
News & Media
Mr Noda is backed by the country's largest newspaper, the Yomiuri, which calls the deployment "indispensible", against "China's military aggrandisement" and threats from North Korea.The government has attempted to douse the controversy by demanding publicly that the American army "reconfirm" the aircraft's safety to that end officials from both sides are meeting on July 26th in Tokyo.
News & Media
And the grounds upon which the more convincing critics are making their stand that Burnham, et al's numbers simply cannot be reconciled with other, relatively well known figures is, contra the study's defenders, a perfectly standard (nay, indispensible) way that scientists check new data.That does not mean that the critics of Burnham, et al are correct.
News & Media
It charges just $8,000 for its own TubeSat kit (13cm long by 9cm in diameter), which includes the case, indispensible components like power and communications, as well as the launch, making it well within reach of many hobbyists and academic clubs (who supply circuit boards and instrumentation of their own).
News & Media
But the broader lesson that one has to think critically about the counterfactual in trying to assess technologies or shocks or economic policy—has been an indispensible one for me.(Photo credit: AFP).
News & Media
Heinz, a packaged-food company based in Pittsburgh, has announced that it will close its tomato-paste plant in California in 1998, preferring to buy this indispensible but mundane ingredient for its ketchup elsewhere and concentrate on adding value to it by burnishing the image of the brand.
News & Media
GENERAL ELECTRIC was the pioneer of many of the gadgets that would now be seen as indispensible in the modern home, but once were luxuries: the lightbulb, the washing-machine and the toaster, to name three.
News & Media
They provided man with transport (in both love and war) and they were indispensible partners down on the farm, when agriculture accounted for the vast majority of economic output.
News & Media
Mr Shiller has applied his work by creating the monthly Case-Shiller index (with economist Karl Case), which many asset managers now find to be an indispensible tool to measure house prices in cities across America.
News & Media
In addition, the use of geographic information systems (GIS) has been indispensible in expanding the scope of cartographic subjects.
Encyclopedias
Expert writing Tips
Best practice
Always double-check the spelling and use "indispensable" instead of "indispensible" to maintain credibility and clarity in your writing.
Common error
Avoid the common mistake of writing "indispensible". The correct spelling is "indispensable". Use a spell-checker to catch this error.
Source & Trust
89%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The term "indispensible" functions as an adjective, intending to describe something as essential or necessary. While the intention is clear, it represents a misspelling of "indispensable". As Ludwig reveals, the correct form is more widely accepted.
Frequent in
News & Media
37%
Encyclopedias
26%
Science
14%
Less common in
Formal & Business
7%
Academic
7%
Social Media
0%
Ludwig's WRAP-UP
The query "indispensible" is a common misspelling of "indispensable", an adjective used to describe something that is absolutely necessary. Despite the misspelling, its prevalence across various sources—including news outlets, encyclopedias, and scientific publications—indicates that its intended meaning is generally understood. However, as Ludwig points out, maintaining credibility in your writing requires using the correct form: "indispensable". Using reliable tools like spell-checkers will help you avoid this common error and ensure your writing is clear and professional. Remember to favor alternatives such as "absolutely essential", "utterly vital", or "completely necessary" to improve your writing quality.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
absolutely essential
Emphasizes the critical necessity of something, similar to "indispensible".
utterly vital
Highlights the importance and necessity, conveying a sense of urgency.
completely necessary
Stresses the unavoidable need for something, synonymous to "indispensible".
crucial
Emphasizes the critical importance and decisive impact, more concise.
essential
A more standard and grammatically correct synonym for "indispensible".
of the essence
Highlights the most important or fundamental aspect, implying necessity.
critically important
Focuses on the high level of importance, avoiding the misspelling.
needed
A simpler term that indicates requirement or necessity, more direct.
required
Indicates a condition that must be met, formal and direct.
unavoidable
Highlights that something cannot be prevented or ignored, focusing on inevitability.
FAQs
What is the correct spelling, "indispensable" or "indispensible"?
The correct spelling is "indispensable". "Indispensible" is a misspelling.
What does "indispensable" mean?
"Indispensable" means absolutely necessary or essential. Something that is "absolutely essential" is so important that it cannot be done without.
How can I use "indispensable" in a sentence?
Example: A reliable team is "absolutely essential" for success in that area.
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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
89%
Authority and reliability
4.1/5
Expert rating
Real-world application tested