1,055 entry under adjective topic. ×

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hardy(person, quality, body, strong)
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indestructible(firm, rigid, unyielding, steely)
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nasty(mean, bad, hard, cool)
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obdurate(mean, strong, hard, cool)
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ambitious(hard, difficult, complex)
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involved(hard, difficult, complex)
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massive(person, body, hard, difficult)
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rock-hard(firm, rigid, unyielding, steely)
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rowdy(noun, person, mean, attack)
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byzantine(hard, difficult, complex)
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disturbing(hard, severe, difficult, awful)
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grave(hard, severe, difficult, harsh)
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grinding(hard, difficult, complex)
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hard to understand(expression, idiom, hard, difficult)
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hardened(noun, characteristic, strong, hard)
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heavy-handed(hard, difficult, complex)
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knotted(hard, difficult, complex)
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leathery(feature, characteristic, strong, hard)
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perplexed(hard, difficult, complex)
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powerful(person, body, strong, great)
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APASmart Define. (2016). tough thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/tough/thesaurus/synonyms
ChicagoSmart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, tough thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>.
MLASmart Define. "tough thesaurus" 30 March 2016. Web. 27 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms>