Synonyms|922Antonyms|85|Broader|13Narrower|9Related|286

153 entries under firmness topic. ×

2
confidence(noun, drive, spirit, belief, determination)
2
constancy(noun, support, control, drive, strength)
2
decidedness(noun, resolve, determination, resolution)
2
diligence(noun, resolve, restraint, determination, resolution)
2
durability(noun, health, support, control, time)
2
guttiness(noun, resolve, determination, persistence)
2
lustiness(noun, health, force, body, power)
2
maturity(noun, support, control, strength, balance)
2
muscle(noun, health, force, body, power)
2
powerhouse(noun, health, force, body, power)
2
robustness(noun, health, force, body, power)
2
security(noun, health, support, action, control)
2
seriousness(noun, resolve, determination, resolution)
2
sinew(noun, health, support, force, body)
2
stableness(noun, health, support, control, force)
2
stubbornness(noun, drive, energy, resolve, determination)
2
substance(noun, health, force, quality, body)
2
what it takes(noun, expression, idiom, strength, resolve)
2
will power(noun, expression, resolve, determination, resolution)
2
willfulness(noun, drive, resolve, determination)
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ChicagoSmart Define. 2015. "backbone thesaurus" https://smartdefine.org/backbone/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, backbone thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/backbone/thesaurus/synonyms>.
MLASmart Define. "backbone thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/backbone/thesaurus/synonyms>