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
both are indispensable
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "both are indispensable" is correct and usable in written English.
You can use it when emphasizing the essential nature of two items, concepts, or individuals in a particular context. Example: "In this project, both are indispensable for achieving our goals."
✓ Grammatically correct
News & Media
Science
Alternative expressions(15)
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
And that, looking ahead, both are indispensable to letting go of old predatory practices and creating a fair, just and peaceful world.
News & Media
Both are indispensable to solving mathematical word problems.
Science
The formation and reproduction of class have both an economic as well as a cultural dimension; both are indispensable (Crompton 2008).
These two pathways are highly integrated, and both are indispensable for normal pain perception.
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
Both were indispensable: Paisley the Big Man with the big picture and an uncanny feel for his grassroots, Robinson the consummate party manager, the one who forensically rechecked everything – line by line, word by word.
News & Media
Hence the use of FD to represent both was indispensable.
Science
Both worlds are indispensable.
News & Media
Ubiquitous inactivation revealed that both genes are indispensable for embryogenesis albeit in different ways.
Science
Both proteins are indispensable components of the smooth muscle cells contractile apparatus and mutations in the encoding genes may prevent proper contraction of the smooth muscle cells.
Genetic manipulations to disrupt Capns1 constitutively or conditionally in mice cause embryonic lethality and cardiac hypertrophy, respectively, indicating that calpains are indispensable both to heart-specific functions and to life itself.
Science
While one person carefully removed the hot grill grate, another lifted the packs out of the coals with a stout grilling spatula and tongs -- both of which are indispensable in this setting.
News & Media
Expert writing Tips
Best practice
When using "both are indispensable", ensure you clearly define the context and what "both" refers to for clarity.
Common error
Avoid using "both are indispensable" in overly casual or informal settings where simpler language would be more appropriate. For example, using "both are needed" might sound more natural in everyday conversation.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "both are indispensable" functions as a predicate adjective phrase. It attributes a quality of essentialness or irreplaceability to two subjects. Ludwig confirms its grammatical correctness.
Frequent in
Science
33%
News & Media
33%
Formal & Business
0%
Less common in
Wiki
0%
Reference
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "both are indispensable" is a grammatically sound and impactful way to express the essential nature of two elements. Ludwig confirms this. While not overly common, it finds use across news, scientific and formal contexts. When using this phrase, ensure clarity in defining what "both" refers to. For more casual settings, simpler alternatives like "both are needed" may be more suitable. Remember that “indispensable” suggests a necessity beyond mere importance. Overall, use "both are indispensable" to underscore the irreplaceability and crucial role of two components within a given framework.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
both are essential
Replaces "indispensable" with "essential", a more common synonym expressing necessity.
both are crucial
Substitutes "indispensable" with "crucial", highlighting the critical importance of both.
both are vital
Replaces "indispensable" with "vital", emphasizing the importance for survival or success.
both are key
Uses "key" as a metaphor for importance, indicating they are fundamental.
both are fundamental
Replaces "indispensable" with "fundamental", stressing that both are basic and necessary.
both are needed
A simpler way of expressing necessity, implying they are required.
both are required
More formal than "needed", indicating a strict necessity.
neither can be omitted
Emphasizes that both elements must be included and are impossible to remove.
each is a must-have
Uses "must-have" to convey that each is extremely desirable or essential.
both are irreplaceable
Highlights the unique value of both, emphasizing that there are no alternatives.
FAQs
How can I use "both are indispensable" in a sentence?
You can use "both are indispensable" to emphasize that two things are essential and necessary. For example, "In a successful team, communication and collaboration "both are indispensable"".
What phrases are similar to "both are indispensable"?
Alternatives to "both are indispensable" include "both are essential", "both are crucial", or "both are vital". The best choice depends on the specific context.
Is it grammatically correct to say "both are indispensable"?
Yes, "both are indispensable" is grammatically correct. It follows standard English sentence structure and is widely used in formal and academic writing.
What is the difference between "both are indispensable" and "both are important"?
"Both are indispensable" suggests a higher level of necessity than "both are important". "Indispensable" implies something is absolutely necessary and cannot be done without, while "important" simply means something has significance.
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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested