180 entries under tough topic. ×

1
vindictive(adjective, mean, hard, severe)
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crotchety(awkward, irritable, grumpy, bad-tempered)
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dense(adjective, strong, hard, sturdy)
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ferric(adjective, strong, hard, sturdy)
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ferrous(adjective, strong, hard, sturdy)
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fretful(awkward, grumpy, bad-tempered, tetchy)
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hard-core(adjective, strong, hard, severe)
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hard as nails(expression, adjective, idiom, cruel)
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indomitable(adjective, strong, hard, sturdy)
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insensible(adjective, mean, strong, hard)
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misanthropic(awkward, grumpy, bad-tempered, tetchy)
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mortified(adjective, strong, hard, severe)
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nasty-tempered(awkward, grumpy, bad-tempered, tetchy)
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no-nonsense(severe, firm, stern)
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resentful(adjective, cruel, grim, painful)
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square(severe, firm, stern)
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steel(adjective, strong, hard, sturdy)
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stickling(severe, firm, stern)
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sturdy(adjective, strong, hard, rugged)
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tough inflexible(expression, strong, hard, sturdy)
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APASmart Define. (2016). harsh thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/harsh/thesaurus/synonyms
ChicagoSmart Define. 2016. "harsh thesaurus" https://smartdefine.org/harsh/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, harsh thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/harsh/thesaurus/synonyms>.
MLASmart Define. "harsh thesaurus" 24 March 2016. Web. 29 September 2026. <https://smartdefine.org/harsh/thesaurus/synonyms>