103 entries under hard topic. ×

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compacted(adjective, strong, substantial, compact)
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compressed(tough, solid, rigid, inflexible)
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condensed(tough, solid, rigid, inflexible)
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congealed(tough, solid, rigid, inflexible)
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consolidated(adjective, strong, substantial, compact)
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dimensional(adjective, strong, substantial, compact)
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disciplinary(adjective, strong, tough, rugged)
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dyed-in-the-wool(adjective, strong, tough, rugged)
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ferric(adjective, strong, tough, rugged)
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ferrous(adjective, strong, tough, rugged)
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fine-grained(tough, solid, rigid, inflexible)
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forbidding(adjective, strong, tough, rugged)
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frowning(adjective, strong, tough, rugged)
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frozen(adjective, compact, dense, rock-hard)
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grim(adjective, strong, tough, rugged)
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hang-tough(adjective, strong, tough, rugged)
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hard-boiled(adjective, strong, tough, rugged)
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hard-core(adjective, strong, tough, rugged)
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hard-nosed(adjective, strong, tough, rugged)
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hard-shell(adjective, strong, tough, rugged)
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APASmart Define. (2016). sturdy thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/sturdy/thesaurus/synonyms
ChicagoSmart Define. 2016. "sturdy thesaurus" https://smartdefine.org/sturdy/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, sturdy thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/sturdy/thesaurus/synonyms>.
MLASmart Define. "sturdy thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/sturdy/thesaurus/synonyms>