68 entries under harden topic. ×
| tauten(verb, strengthen, reinforce, thicken) | |
| tense(verb, strengthen, reinforce, thicken) | |
| turn to stone(expression, idiom, solidify) | |
| casehardened(close, set, firm, dry) | |
| clarify | |
| make hard(expression, solidify) | |
| mineralize | |
| turn into stone(expression, idiom, solidify) |
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| APA | Smart Define. (2015). ossify thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/ossify/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "ossify thesaurus" https://smartdefine.org/ossify/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, ossify thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/ossify/thesaurus/synonyms>. |
| MLA | Smart Define. "ossify thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/ossify/thesaurus/synonyms> |