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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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onus of proof

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "onus of proof" is correct and usable in written English.
It is typically used in legal contexts to refer to the obligation of a party to prove their claims or assertions in a dispute. Example: "In a criminal trial, the prosecution carries the onus of proof to establish the defendant's guilt beyond a reasonable doubt."

✓ Grammatically correct

News & Media

Encyclopedias

Science

Human-verified examples from authoritative sources

Exact Expressions

44 human-written examples

"That's not a reversal of the onus of proof".

News & Media

The Guardian

"The onus of proof is on the CSIRO, they are the tip of $1tn climate industry.

News & Media

The Guardian

Sometimes O'Hara claims those seeking change should bear the onus of proof, but one could be sceptical about that, too.

News & Media

Independent

First, banks now use contract terms to shift the onus of proof to the customer when there is a dispute.

News & Media

The Economist

Making a spurious claim about temperature records attempts to put the onus of proof on the interlocutor.

News & Media

The Guardian

"What either investigator is investigating is different and the onus of proof is completely different," he said.

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Human-verified similar examples from authoritative sources

Similar Expressions

15 human-written examples

For criminal trials in which a defendant claims self-defense, the legislation flips the burden of proof, putting the onus on prosecutors to discredit those claims.

News & Media

The New York Times

Our new systems are secure, so it must be your fault". In the case of severe fraud, the onus may well fall on the customer to prove the fallibility of their systems, which is "an unmeetable burden of proof", says Anderson, who has even known a bank to prosecute a customer, a victim of phantom withdrawals, for attempted fraud.

This would include writing into legislation the onus for proof of patent infringement on the patent holder [ 37].

Understand burden of proof.

Understand the burden of proof.

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Expert writing Tips

Best practice

Use the phrase "onus of proof" to clearly indicate which party is responsible for providing evidence or justification for a claim or argument.

Common error

Avoid using "onus of proof" loosely. It has a specific legal and argumentative meaning. Ensure the context clearly indicates that a formal requirement to provide evidence exists, not just a general need to convince.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

85%

Authority and reliability

4.6/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "onus of proof" functions as a noun phrase, identifying the responsibility or obligation to provide evidence supporting a claim. As Ludwig AI highlights, it is frequently used in legal and argumentative contexts.

Expression frequency: Very common

Frequent in

News & Media

35%

Science

25%

Encyclopedias

15%

Less common in

Wiki

10%

Academia

10%

Formal & Business

5%

Ludwig's WRAP-UP

The phrase "onus of proof" is a commonly used noun phrase that defines the responsibility to provide evidence for a claim, particularly within legal, academic, and argumentative contexts. According to Ludwig AI, it is grammatically correct and frequently appears in news, scientific, and encyclopedic sources. While "burden of proof" is a close synonym, "onus of proof" emphasizes the obligation itself. Misusing the phrase can lead to misrepresenting legal or argumentative burdens, so clarity is crucial. Understanding its function helps ensure accurate and persuasive communication.

FAQs

What does "onus of proof" mean?

The "onus of proof" refers to the responsibility of a party in a dispute or argument to provide sufficient evidence to support their claims. It essentially means it's their job to prove it.

How is "onus of proof" used in law?

In law, the "onus of proof" typically lies with the prosecution in criminal cases and with the plaintiff in civil cases. This means they must present compelling evidence to convince the court of the defendant's guilt or liability.

What's the difference between "onus of proof" and "burden of proof"?

The terms "onus of proof" and "burden of proof" are often used interchangeably. They both refer to the obligation to prove one's assertion. Some legal scholars distinguish them, with 'onus' referring to the ultimate persuasive burden and 'burden' referring to the burden of producing evidence.

Is it ever possible to reverse the "onus of proof"?

Yes, in some specific legal situations, the "onus of proof" can be reversed. This typically occurs when a party has access to information that the other party doesn't, or in cases involving strict liability. This is called reversed "onus of proof".

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Most frequent sentences: