be indispensable to

USAGE SUMMARY

The phrase "be indispensable to" is correct and usable in written English.
You can use it to express that something or someone is absolutely necessary or essential for a particular purpose or situation. Example: "Her expertise in project management makes her be indispensable to the success of our team."

✓ Grammatically correct

News & Media

Science

Encyclopedias

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

If a peace agreement is eventually reached, Washington's help will be indispensable to making it work.

The New York Times

Dogma became the traditional term for truths believed to be indispensable to the Christian faith.

Encyclopedia Britannica

If the Lib Dems hold the balance, they will be indispensable to the formation of a new government.

The New Yorker

On foreign policy America continues to be indispensable to the goal of global liberty, prosperity and safeguarding human rights.

The Guardian

On foreign policy, America continues to be indispensable to the goal of global liberty, prosperity and safeguarding human rights.

The New York Times

After nearly two decades of government service, Mr. Kudrin was widely considered to be indispensable to the government.

The New York Times

In the colder climate with its seasonal scarcity of plant food, scientists said, meat would presumably be indispensable to the hominid diet.

The New York Times - Science

The court said: Inviolability of privacy in group association may in many circumstances be indispensable to preservation of freedom of association, particularly where a group espouses dissident beliefs.

The Guardian - Opinion

Here he is, 38, widely considered to be indispensable to the Yankees' chances of defending their 27th championship next month, most of all by his teammates.

The New York Times - Sports

The Septuagint has survived as the most valuable work in the history of translation and continues to be indispensable to all biblical studies.

Encyclopedia Britannica

It is obvious that much of the appeal of these chronicles lies in the possibility of vicarious heroism, of identifying with the unprepossessing, marginal, nerdy guys who turn out to be indispensable to the survival of the universe.

The New York Times

Expert writing Tips

Best practice

Use this phrase when you want to highlight that something is not just helpful, but literally cannot be done without

Common error

While "indispensable for" is occasionally seen, the most grammatically standard and frequent preposition in high-quality writing is "to". Avoid using "with" or "from" after indispensable as it breaks the semantic link between the subject and its purpose

Linguistic Context

The phrase "be indispensable to" functions as a predicative adjective phrase that asserts an absolute requirement. In the Ludwig AI corpus, it often appears with modal verbs like 'will', 'may' or 'should' to project necessity into future scenarios or theoretical models.

Expression frequency: Very common

Frequent in

Science & Academic Research

45%

News & Media Analysis

35%

Formal Business & Policy

20%

Less common in

Social Media

5%

Informal Conversation

10%

Creative Fiction

15%

Ludwig's WRAP-UP

The phrase "be indispensable to" is a powerful tool for writers looking to convey that something is absolutely essential and irreplaceable. Ludwig's extensive database highlights its prevalence in high-authority sources, particularly in scientific research and analytical journalism. It is most effective when used to describe a core component of a larger system—whether that is a person in a team, a gene in a biological process or a policy in a government. By choosing "be indispensable to" over simpler alternatives like "be needed for", you signal a higher level of professional precision and emphasize that there is no substitute for the subject in question. Remember to pair it with the preposition "to" for the most polished and grammatically standard result.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

be essential to

The most direct synonym, often used for basic requirements

be vital to

Adds a connotation of life-giving or organic necessity

be crucial to

Often used when the necessity relates to a specific turning point or decision

be critical to

Emphasizes that failure or absence would be catastrophic

be fundamental to

Suggests the subject forms the base or core of the target

be integral to

Suggests the subject is an inseparable part of a whole

be key to

A more idiomatic or metaphorical way to express central importance

be imperative to

Focuses on the urgency or duty involved in the necessity

be prerequisite to

Formal term used when one thing must happen before another can exist

be instrumental in

Changes the preposition to focus on the subject as a tool or means

FAQs

How do I use "be indispensable to" in a sentence?

You can use it to describe someone or something that is absolutely necessary. For example: "Her technical skills will "be indispensable to" our team's upcoming project."

What is the difference between "indispensable to" and "essential to"?

While "be essential to" means something is very important, "be indispensable to" implies that the thing is unique and cannot be replaced. It is a slightly stronger level of necessity.

Is it "indispensable to" or "indispensable for"?

Both are used, but "indispensable to" is the preferred choice in professional and academic writing. Ludwig's data shows a strong preference for "to" when referring to a goal or a process.

What are some formal synonyms for "be indispensable to"?

Depending on your context, you can use "be integral to", "be vital to", or "be pivotal to".