66 entries under substance topic. ×

27
health(noun, health, force, body, power)
13
stability(noun, health, support, control, change)
12
strength(noun, health, support, control, change)
10
firmness(noun, health, support, control, change)
8
steadiness(noun, health, support, control, change)
7
validity(noun, strength, color, chance)
7
vigor(noun, health, force, body, power)
6
healthiness(noun, health, force, body, power)
6
security(noun, health, support, control, change)
6
sturdiness(noun, health, support, control, change)
5
durability(noun, health, support, control, force)
5
robustness(noun, health, force, body, power)
5
toughness(noun, health, support, control, force)
4
force(noun, health, body, power, strength)
4
stableness(noun, health, support, control, change)
3
cogency(strength, rationality, authenticity, soberness)
3
vitality(noun, health, force, body, power)
3
weight(noun, health, strength, healthiness)
2
authenticity(noun, consistency, dependability, realness)
2
authority(strength, reliability, trustworthiness, rationality)
11 years ago|9.1k views|share |citing 
APASmart Define. (2015). soundness thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/soundness/thesaurus/synonyms
ChicagoSmart Define. 2015. "soundness thesaurus" https://smartdefine.org/soundness/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, soundness thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/soundness/thesaurus/synonyms>.
MLASmart Define. "soundness thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/soundness/thesaurus/synonyms>