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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
onus of proof
Grammar usage guide and real-world examplesUSAGE 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
Alternative expressions(2)
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
44 human-written examples
"That's not a reversal of the onus of proof".
News & Media
"The onus of proof is on the CSIRO, they are the tip of $1tn climate industry.
News & Media
Sometimes O'Hara claims those seeking change should bear the onus of proof, but one could be sceptical about that, too.
News & Media
First, banks now use contract terms to shift the onus of proof to the customer when there is a dispute.
News & Media
Making a spurious claim about temperature records attempts to put the onus of proof on the interlocutor.
News & Media
"What either investigator is investigating is different and the onus of proof is completely different," he said.
News & Media
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
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.
News & Media
This would include writing into legislation the onus for proof of patent infringement on the patent holder [ 37].
Science
Understand burden of proof.
Wiki
Understand the burden of proof.
Wiki
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.
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.
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.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
burden of proving
Focuses on the act of proving something, rather than the responsibility itself.
responsibility to demonstrate
Emphasizes the obligation to show or make evident.
duty to substantiate
Highlights the legal or formal requirement to provide evidence.
obligation to validate
Stresses the need to confirm or support the truth of a claim.
requirement to evidence
Focuses on the need to present proof or documentation.
compulsion to justify
Highlights the force or necessity to provide reasons or explanations.
liability to verify
Emphasizes the legal or ethical accountability to confirm accuracy.
accountability to confirm
Focuses on the responsibility to ensure something is accurate or true.
the proof rests with
Indicates where the responsibility of proving something lies.
evidential burden
A more succinct way to refer to the need to supply evidence.
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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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
4.6/5
Expert rating
Real-world application tested