Meanings
plural soundnesses
- uncountableThe state or quality of being sound.
- countableThe result or product of being sound.
- countableuncountablehuman sciencesThe property of a logical theory that whenever a wff is a theorem then it must also be valid. Symbolically, letting T represent a theory within logic L, this can be represented as the property that whenever T⊢φ is true, then T⊨φ must also be true, for any wff φ of logic L.
Synonyms & antonyms
nounthe quality of being prudent and sensible
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
- Proto-West Germanic*sundnassī“soundness, health”
- Old English*sundnes
- Middle Englishsoundenes
- Englishsoundness
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”).
More words from Middle English, Old English, Proto-West Germanic
Full word history & related roots →Translations
Catalan completesa
- completesathe property of logical theory
Irish folláine
- folláinethe state or quality of being sound
Romanian trăinicie, soliditate
- trăiniciethe state or quality of being sound
- soliditatethe state or quality of being sound
- robustețethe state or quality of being sound
- soliditatethe result or product of being sound
Spanish completitud
- completitudthe property of logical theory
Cite this entry
soundness. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/soundness
“soundness.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/soundness. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “soundness,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/soundness.
Source: soundness on Wiktionary, CC BY-SA 4.0.