7
durability(noun, health, support, control, force)
7
energy(noun, health, force, body, power)
7
moxie(noun, activity, go, drive, power)
7
power(noun, activity, go, force, body)
7
spunk(noun, strength, energy, spirit, vigor)
7
stiffness(noun, difficulty, firmness, protection, security)
7
temper(noun, protection, security, rigidity, hardness)
6
fortitude(noun, health, force, body, power)
6
determination(noun, support, control, strong, strength)
6
endurance(noun, support, control, go, power)
6
flexibility(noun, hard, power, strength, resistance)
6
formidability(noun, difficulty)
6
pluck(noun, activity, go, drive, power)
6
stability(noun, health, support, control, force)
6
staying power(noun, expression, idiom, strength, heart)
6
stubbornness(noun, determination, resolution, firmness, steadfastness)
5
arduousness(noun, difficulty, discipline, strictness, hardness)
5
decisiveness(noun, strong, certain, determination, resolution)
5
might(noun, health, go, force, body)
5
nerve(noun, health, force, body, power)
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APASmart Define. (2015). toughness thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/toughness/thesaurus/synonyms
ChicagoSmart Define. 2015. "toughness thesaurus" https://smartdefine.org/toughness/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, toughness thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/toughness/thesaurus/synonyms>.
MLASmart Define. "toughness thesaurus" 21 December 2015. Web. 25 September 2026. <https://smartdefine.org/toughness/thesaurus/synonyms>