2
power(noun, spirit, dash, courage, nerve)
2
predilection
2
predisposition
2
proclivity
2
propensity
2
pugnacity(noun, attack, power, spirit, fight)
2
self-control
2
self-discipline(noun, courage, fortitude, stamina)
2
stability(noun, strength, resolution, courage, fortitude)
2
staying power(noun, expression, strength, spirit, determination)
2
streak(noun, nature, quality, kind, spirit)
2
sturdiness
2
substance(noun, force, quality, character, strength)
2
tendency(noun, nature, quality, character, inclination)
2
tenderness(noun, emotion, mood, temperament, core)
2
truculence(noun, attack, spirit, fight)
2
true grit(noun, expression, strength, spirit, determination)
2
undauntedness(noun, quality, spirit, dash, fear)
2
valiantness(noun, quality, spirit, dash, fear)
2
vein(noun, nature, quality, kind, spirit)
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APASmart Define. (2015). mettle thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/mettle/thesaurus/synonyms
ChicagoSmart Define. 2015. "mettle thesaurus" https://smartdefine.org/mettle/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, mettle thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/mettle/thesaurus/synonyms>.
MLASmart Define. "mettle thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/mettle/thesaurus/synonyms>