Translation guide
A sound argument is one that is logically valid and based on true premises, or more broadly, a well-reasoned and convincing argument. This guide covers how to express this concept naturally in Japanese.
To describe an argument that is logically valid and based on true premises, often in academic or formal contexts.
This is the most direct translation for a logically sound argument, commonly used in philosophy and logic.
To describe an argument that is well-thought-out, reasonable, and persuasive in general contexts.
Means a coherent, logical argument. Very natural in both spoken and written Japanese.
The English word 'sound' in 'sound argument' does not translate to 音 (おと) or サウンド. Using those would be incorrect. Stick to the phrases above.
His claim is based on a sound argument.
Used in formal logic to mean 'sound argument' (valid + true premises). Less common in everyday speech.
This reasoning cannot be called a sound argument.
He always makes sound arguments.
Means a reasonable, rational argument. Slightly more formal than 筋の通った.
The proposal is supported by sound arguments.
Emphasizes the persuasive power of the argument. Common in business and everyday contexts.
Her presentation was full of sound arguments.
Means a solid, well-founded argument. Casual and often used in spoken Japanese.
I can't be convinced unless you give me a more sound argument.