1
brain(noun, understanding, power, spirit, mind)
1
brainpower(noun, understanding, power, spirit, mind)
1
brains(noun, understanding, power, spirit, mind)
1
brawn(noun, health, force, body, power)
1
brawniness(noun, health, force, body, power)
1
brute force(noun, expression, health, force, body)
1
calculability
1
candidness(noun, honor, substance, confidence, goodness)
1
candor(noun, honor, right, confidence, goodness)
1
canonicalness
1
canonicity
1
capacity(noun, activity, action, go, drive)
1
certainty(noun, confidence, well-being)
1
class
1
clean bill(noun, expression, health, strength, energy)
1
clear mind(expression, wit, prudence, stability, rationality)
1
clout(noun, health, force, body, power)
1
coherence(noun, reason, sense, judgment, unity)
1
cohesiveness(noun, constant)
1
complexion(noun, health, strength, energy, condition)
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APASmart Define. (2015). soundness thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/soundness/thesaurus/synonyms
ChicagoSmart Define. 2015. "soundness thesaurus" https://smartdefine.org/soundness/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, soundness thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/soundness/thesaurus/synonyms>.
MLASmart Define. "soundness thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/soundness/thesaurus/synonyms>