20
resilience(noun, state, quality, hard, power)
20
strength(noun, support, control, go, force)
14
tenacity(noun, health, state, force, quality)
13
stamina(noun, health, force, power, strength)
12
sturdiness(noun, health, support, control, force)
11
firmness(noun, health, support, control, force)
11
hardiness(noun, health, force, body, hard)
11
permanence(noun, support, control, strength, balance)
10
hardness(noun, support, control, power, strength)
10
harshness(noun, force, power, easy, difficulty)
8
severity(noun, power, easy, difficulty, condition)
8
backbone(noun, health, support, control, force)
8
grit(noun, strength, spirit, determination, resolution)
8
huskiness(noun, strength)
8
rigidity(noun, easy, condition, discipline, firmness)
8
ruggedness
8
solidity(noun, support, control, strength, balance)
8
stoutness(noun, health, force, body, power)
7
callousness(noun, insensitivity, hardness)
7
difficulty(noun, difficulty, discipline, strictness, hardness)
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APASmart Define. (2015). toughness thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/toughness/thesaurus/synonyms
ChicagoSmart Define. 2015. "toughness thesaurus" https://smartdefine.org/toughness/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, toughness thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/toughness/thesaurus/synonyms>.
MLASmart Define. "toughness thesaurus" 21 December 2015. Web. 22 September 2026. <https://smartdefine.org/toughness/thesaurus/synonyms>