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
a sound argument
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a sound argument" is correct and usable in written English.
It can be used when discussing reasoning or logic that is well-founded and persuasive. Example: "In the debate, she presented a sound argument that convinced many of the audience members."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(20)
a valid argument
a strong argument
a compelling argument
a cogent argument
a persuasive argument
a convincing argument
a logical argument
a sensible argument
a sound debate
a solid argument
a sound point
a sound theory
a sound justification
a sound discussion
a good argument
a sound wager
a bitter argument
a nonsense argument
a sound foundation
a sound system
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
57 human-written examples
The latter evaluates arguments in terms of "soundness," defining a sound argument as a deductively valid inference with true premises that establishes the truth of its conclusion.
Science
It's a sound argument.
News & Media
That's a sound argument to my mind.
News & Media
That is a sound argument for not pushing change along precipitously.
News & Media
"I would be prepared to hear a sound argument that something else was at play; this was not a sound argument," Ms. Garry said in an interview.
News & Media
Logicians and philosophers make a distinction between a valid argument and a sound argument.
News & Media
At 5-1, he provides a sound argument for settling the dilemma over his younger rivals by rejecting them both.
News & Media
On a historical level, of course, West Brom had a sound argument for being Fulham's superiors in this competition.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
3 human-written examples
We could make a sounder argument if we had quality outcome variables.
There is a perfectly sound argument that a newly elected government should take its most painful decisions quickly while it enjoys a fresh mandate, and should ideally frontload those painful decisions.
News & Media
In the case of each paradox, there appears to be a perfectly sound argument ending in a contradiction.
Science
Expert writing Tips
Best practice
When constructing an argument, ensure it is not only logically valid but also supported by credible evidence to make it truly "a sound argument".
Common error
Avoid assuming that a valid argument is necessarily "a sound argument". Validity refers to the structure of the argument, while soundness requires both validity and true premises.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a sound argument" functions as a noun phrase, where 'sound' acts as an adjective modifying 'argument'. Ludwig examples show it's used to describe the quality and effectiveness of a line of reasoning. It characterizes an argument as logically valid and based on true premises.
Frequent in
News & Media
36%
Science
34%
Formal & Business
10%
Less common in
Encyclopedias
5%
Wiki
3%
Reference
0%
Ludwig's WRAP-UP
In summary, "a sound argument" is a phrase used to describe an argument that is both logically valid and based on true premises, as verified by Ludwig. Its usage is common across various contexts, especially in news, science, and formal communications. The phrase highlights the quality and effectiveness of reasoning, emphasizing its reliability and persuasiveness. While alternatives like "a valid argument" or "a strong argument" exist, "a sound argument" specifies that the premises are also true, making it a stronger endorsement. As confirmed by Ludwig AI, it's crucial to distinguish between validity and soundness when evaluating arguments.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a valid argument
Focuses on the logical structure and coherence of the argument.
a strong argument
Emphasizes the forcefulness and persuasiveness of the argument.
a well-founded argument
Highlights the presence of a solid base of evidence and reasoning.
a compelling argument
Stresses the argument's ability to convince and persuade.
a cogent argument
Indicates the argument is clear, logical, and convincing.
a persuasive argument
Highlights the argument's effectiveness in changing opinions.
a convincing argument
Emphasizes the argument's ability to inspire belief or agreement.
a reasoned argument
Implies the argument is based on logic and careful thought.
a logical argument
Highlights the consistent and coherent nature of the argument.
a substantive argument
Suggests the argument has significant content and importance.
FAQs
How can I use "a sound argument" in a sentence?
You can use "a sound argument" to describe an argument that is both valid and has true premises. For instance, "The lawyer presented "a sound argument" that convinced the jury of his client's innocence."
What's the difference between "a valid argument" and "a sound argument"?
A valid argument is one where if the premises are true, the conclusion must be true. "A sound argument" is a valid argument with true premises. Therefore, a sound argument guarantees a true conclusion.
What are some alternatives to using "a sound argument"?
Depending on the context, you could use alternatives like "a valid argument", "a strong argument", or "a compelling argument".
How do I construct "a sound argument"?
To construct "a sound argument", ensure your argument is logically valid, meaning the conclusion follows from the premises. Then, verify that all premises are true and supported by evidence.
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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested