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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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is rational

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "is rational" is correct and usable in written English.
It can be used to describe something that is logical, reasonable, or based on sound judgment. Example: "Her argument is rational and well-supported by evidence."

✓ Grammatically correct

News & Media

Science

Encyclopedias

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

The idea is rational.

News & Media

The New York Times

It is rational.

News & Media

The New Yorker

What is rational expectations?

News & Media

The New Yorker

Righty is rational.

This is rational corporate behaviour.

News & Media

The Guardian

I decide this is rational.

"I think that is rational.

News & Media

The New York Times

Fear of Muslims is RATIONAL.

News & Media

The Guardian

But the idea is rational.

"The market is rational; the government's dumb".

"Iran is rational," Mr. Labbad said.

News & Media

The New York Times
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Expert writing Tips

Best practice

When using "is rational", ensure that the context provides sufficient information for the reader to understand the basis for the claim of rationality.

Common error

Avoid claiming something "is rational" without providing supporting evidence or reasoning. Rationality is often subjective, so clearly articulate the basis for your assessment.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

87%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "is rational" functions as a predicate adjective, attributing the quality of being logical or reasonable to a subject. Ludwig confirms this use. It is used to express that something aligns with reason and sound judgment.

Expression frequency: Very common

Frequent in

News & Media

45%

Science

25%

Encyclopedias

8%

Less common in

Formal & Business

7%

Wiki

5%

Academia

5%

Ludwig's WRAP-UP

In summary, the phrase "is rational" is a common and grammatically correct way to describe something as being logical and reasonable. Ludwig AI affirms its validity. As shown by numerous examples from diverse sources such as news media, scientific publications, and encyclopedias, it is used to indicate that a decision, argument, or behavior is based on sound judgment rather than emotion. While generally neutral to formal in tone, ensure you provide sufficient context or evidence when asserting that something "is rational", as rationality can be subjective. Consider alternatives like ""makes sense"", ""is logical"", or ""is reasonable"" to fine-tune your expression depending on the specific nuance you intend to convey.

FAQs

How can I use "is rational" in a sentence?

You can use "is rational" to describe something that is based on reason or logic. For example, "His decision "is rational" because it considered all the available evidence."

What are some alternatives to "is rational"?

Depending on the context, alternatives to "is rational" include "is logical", "is reasonable", or "makes sense".

When is it appropriate to use "is rational"?

It's appropriate to use "is rational" when you want to emphasize that something is based on reason and sound judgment, rather than emotion or bias. For example: "Investing in renewable energy "is rational" due to the long-term environmental and economic benefits."

What's the difference between "is rational" and "is reasonable"?

"Is rational" emphasizes logic and deduction, while "is reasonable" suggests fairness and moderation. A decision that "is rational" may not always be seen as "is reasonable" if it doesn't consider ethical or social factors.

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Source & Trust

87%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: