127 entries under hard topic. ×

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hang-tough(adjective, strong, tough, sturdy)
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hard-boiled(adjective, strong, tough, sturdy)
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hard-core(adjective, strong, tough, sturdy)
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hard-line(adjective, strong, tough, sturdy)
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hard-nosed(adjective, strong, tough, severe)
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hard-shell(adjective, strong, tough, sturdy)
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hardened(tough, solid, rigid, inflexible)
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hardheaded(adjective, strong, tough, sturdy)
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hulk(adjective, strong, substantial, compact)
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hunk(adjective, strong, substantial, compact)
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immovable(adjective, strong, tough, sturdy)
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indomitable(adjective, strong, tough, sturdy)
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inelastic(tough, solid, rigid, inflexible)
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mortified(adjective, strong, tough, sturdy)
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mulish(adjective, strong, tough, sturdy)
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rock(adjective, strong, substantial, compact)
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rock-hard(adjective, compact, dense)
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rock-solid(adjective, compact, dense, rock-hard)
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rock hard(expression, adjective, strong, tough)
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rocklike(adjective, strong, substantial, compact)
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APASmart Define. (2016). heavy thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/heavy/thesaurus/synonyms
ChicagoSmart Define. 2016. "heavy thesaurus" https://smartdefine.org/heavy/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, heavy thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/heavy/thesaurus/synonyms>.
MLASmart Define. "heavy thesaurus" 25 January 2016. Web. 26 September 2026. <https://smartdefine.org/heavy/thesaurus/synonyms>