11
health(noun, weakness, perfection)
7
strength(noun, health, inactivity, perfection)
7
vigor(noun, feelings, characteristics, states)
6
energy(noun, feelings, characteristics, states)
6
hardiness(noun, feelings, characteristics, states)
6
wellness(noun, weak, sick, unhealthy, malady)
5
soundness(noun, health, perfection)
5
firmness(noun, form, weakness, status, states)
5
forcefulness(noun, form, status, states)
5
power(noun, ability, weakness, capacity, inactivity)
5
powerfulness(noun, health, feeling, weakness, condition)
5
robustness(noun, health, disease, perfection)
5
sturdiness(noun, feelings, characteristics, states)
5
vitality(noun, condition, feelings, states)
5
wholesomeness(noun, feelings, characteristics, states)
4
fortitude(noun, form, health, feeling, status)
4
good condition(noun, expression, health, feeling, weakness)
4
hardness(noun, condition, feelings, states)
4
stoutness(noun, cowardice, flimsiness, skinniness)
4
toughness(noun, feelings, characteristics, states)
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APASmart Define. (2015). infirmity thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/infirmity/thesaurus/antonyms
ChicagoSmart Define. 2015. "infirmity thesaurus" https://smartdefine.org/infirmity/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2015, infirmity thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/infirmity/thesaurus/antonyms>.
MLASmart Define. "infirmity thesaurus" 23 December 2015. Web. 25 September 2026. <https://smartdefine.org/infirmity/thesaurus/antonyms>