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
an indispensable prerequisite
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "an indispensable prerequisite" is correct and usable in written English.
It can be used to describe something that is absolutely necessary before something else can occur or be achieved. Example: "A solid understanding of basic mathematics is an indispensable prerequisite for studying advanced physics."
✓ Grammatically correct
Science
News & Media
Encyclopedias
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
40 human-written examples
Giving the employer that chance is "a requirement, an indispensable prerequisite to a lawsuit," Connie L. Lensing, a lawyer for Federal Express making her first Supreme Court argument, told the justices.
News & Media
In his numerous commentaries on Aristotle's logical works, he expounded for the first time in Arabic the entire range of the scientific and nonscientific forms of argument and established the place of logic as an indispensable prerequisite for philosophic inquiry.
Encyclopedias
The European TUC supported the charter as envisaged at the EU council that met in Cologne in June 1999, which concluded that the "protection of fundamental rights is a founding principle of the (European) Union and an indispensable prerequisite for her legitimacy".
News & Media
The precise measurement of musical time was simply an indispensable prerequisite for compositions in which separate, yet simultaneously sounded, melodic entities were combined in accordance with the medieval theorists' rules of consonance (specifying the proper intervals to be used between voice parts, especially at points of musical repose).
Encyclopedias
The proper numerical treatment of strain is an indispensable prerequisite of an accurate localization prediction.
Origins, in other words, showed absence of thinking as an indispensable prerequisite for the success of Nazi ideology.
Human-verified similar examples from authoritative sources
Similar Expressions
19 human-written examples
Nevertheless, the indispensable prerequisite of a substantial increase in public funding is challenged by the current economic crisis and domestic political situation.
Science
Now, the respect for reality and "kindness" towards it, even when our desire for change makes it revocable, is nevertheless fragile; not only is it not a hindrance to transformation and change but on the contrary constitutes the indispensable prerequisite.
One indispensable prerequisite for this procedure is to calculate genetic distances at both levels of organization (within and between species) in order to identify the gap.
Science
This pattern is summarized by two categorical perspectives: (1) the conception that stability in the vocational area, financial security, and a solid partnership are indispensable prerequisites to having children, and (2) the perception that children are a potential risk or threat to the personal lifestyle achieved.
These are indispensable prerequisites to making any progress.
News & Media
Expert writing Tips
Best practice
When using "an indispensable prerequisite", ensure that the sentence clearly indicates what action or outcome depends on fulfilling that prerequisite. This adds clarity and emphasizes the importance of the condition.
Common error
Avoid using "an indispensable prerequisite" when a simpler or less emphatic phrase would suffice. Overusing this phrase can make your writing sound unnecessarily formal or dramatic. Instead, consider whether "a necessary condition" or "an essential requirement" would be more appropriate.
Source & Trust
82%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "an indispensable prerequisite" functions as a noun phrase, typically serving as a subject complement or object. It identifies something that is absolutely required before a specific action or process can occur. Ludwig confirms the correct usage of the phrase.
Frequent in
Science
64%
News & Media
19%
Encyclopedias
7%
Less common in
Formal & Business
2%
Reference
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "an indispensable prerequisite" is a noun phrase denoting something absolutely necessary. Ludwig confirms it's grammatically correct, frequently appearing in scientific and formal contexts. The phrase emphasizes the critical nature of a requirement, with alternatives like "a mandatory requirement" offering similar meanings. When using this phrase, ensure clarity about the dependent action and avoid overuse to maintain writing conciseness.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
a mandatory requirement
Replaces "indispensable" with "mandatory" and "prerequisite" with "requirement" maintaining the core meaning of something absolutely necessary.
a crucial necessity
Substitutes "indispensable" with "crucial" and "prerequisite" with "necessity" emphasizing the critical importance of something.
an essential condition
Replaces "indispensable" with "essential" and "prerequisite" with "condition", highlighting the fundamental nature of the requirement.
a vital stipulation
Uses "vital" in place of "indispensable" and "stipulation" instead of "prerequisite", conveying a sense of critical importance and formality.
a prime necessity
Substitute "indispensable" with "prime" meaning first in order of importance and "prerequisite" with "necessity".
a key requisite
Employs "key" as a synonym for "indispensable" and "requisite" for "prerequisite", suggesting a critical element that is needed.
a fundamental pre-condition
Combines "fundamental" with "pre-condition" to underscore the basic and necessary nature of the requirement.
an absolute imperative
Replaces the original phrase with a more forceful expression, emphasizing the unavoidable and crucial nature of the requirement.
a non-negotiable term
Replaces the original phrase with a stronger emphasis on the obligatory nature of the requirement, suggesting no flexibility.
a must-have element
Uses a more informal tone, replacing "indispensable prerequisite" with a common idiom for something essential.
FAQs
How can I use "an indispensable prerequisite" in a sentence?
Use "an indispensable prerequisite" to emphasize that something is absolutely necessary before something else can happen. For example, "A valid passport is "an indispensable prerequisite" for international travel."
What are some alternatives to "an indispensable prerequisite"?
You can use alternatives like "a mandatory requirement", "an essential condition", or "a crucial necessity" depending on the context.
Is "indispensable prerequisite" redundant?
While both words convey necessity, "indispensable" emphasizes that something is irreplaceable or absolutely essential, while "prerequisite" highlights that it must come before something else. The combination reinforces the critical nature of the requirement, but context determines if the emphasis is needed.
What is the difference between "an indispensable prerequisite" and "a desirable attribute"?
"An indispensable prerequisite" is something absolutely necessary, without which a certain outcome is impossible. In contrast, "a desirable attribute" is a beneficial quality that improves something but isn't strictly required.
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
82%
Authority and reliability
4.6/5
Expert rating
Real-world application tested