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Added 29 September 2026

soundness

noun

noun Definition from Wiktionary (CC BY-SA). More about soundness at Wordnik → Where our words come from →

The state or quality of being sound.
The result or product of being sound.
The property (of an argument) of not only being valid, but also of having true premises.

Origin

From Middle English soundenes, soundnes, from Old English *sundnes, *ġesundnes (attested in onsundnes), from Proto-West Germanic *sundnassī (“soundness, health”); equivalent to sound + -ness. Cognate with West Frisian sûnens (“soundness, health”), Middle Low German suntnisse (“soundness, health”), Middle High German suntnisse (“soundness, health”), German Gesundnis (“health”).

From Wiktionary, via Kaikki.org (CC BY-SA)

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