26 entries under hardness topic. ×
| block(noun, thing, bar, mass, element) | |
| stone(noun, block, materials, slab) | |
| bone | |
| board | |
| cement | |
| concrete(adjective, materials) | |
| heart of oak(expression, idiom) | |
| adamant | |
| flint | |
| granite(noun, stonework) | |
| iron | |
| rock | |
| marble | |
| nail | |
| steel | |
| cartilage | |
| cast iron(expression, idiom) | |
| crag | |
| crystal | |
| deal board(expression, idiom) |
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| APA | Smart Define. (2015). brick thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/brick/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "brick thesaurus" https://smartdefine.org/brick/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, brick thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/brick/thesaurus/synonyms>. |
| MLA | Smart Define. "brick thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/brick/thesaurus/synonyms> |