Synonyms|59Antonyms|0|Broader|0Narrower|0Related|67

37 entries under noun topic. ×

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inflexibility
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manhood
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mettle
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nerve
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patience
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permanence
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persistence
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resistance
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resolution
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rigidity
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robustness
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solidity
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soundness
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stability
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steadfastness
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tenacity
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toughness
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APASmart Define. (2013). tougher thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/tougher/thesaurus/synonyms
ChicagoSmart Define. 2013. "tougher thesaurus" https://smartdefine.org/tougher/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2013, tougher thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/tougher/thesaurus/synonyms>.
MLASmart Define. "tougher thesaurus" 18 May 2013. Web. 30 September 2026. <https://smartdefine.org/tougher/thesaurus/synonyms>