26 entries under hardness topic. ×
| adamant | |
| bone | |
| crag | |
| crystal | |
| flint | |
| block | |
| board | |
| brick | |
| cartilage | |
| cement | |
| concrete | |
| granite | |
| marble | |
| pebble | |
| quartz | |
| rock | |
| stone | |
| cast iron(expression, idiom) | |
| deal board(expression, idiom) | |
| decarbonized iron(expression, idiom) |
For more, visit
Fossil on
Power Thesaurus
| APA | Smart Define. (2015). fossil thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/fossil/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "fossil thesaurus" https://smartdefine.org/fossil/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, fossil thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/fossil/thesaurus/synonyms>. |
| MLA | Smart Define. "fossil thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/fossil/thesaurus/synonyms> |