127 entries under set topic. ×
| steel(verb, support, close, increase) | |
| acclimatize(verb, close, continue, firm) | |
| acclimate(verb, close, keep, overcome) | |
| clot(verb, form, close, develop) | |
| anneal(verb, support, close, increase) | |
| buttress(verb, support, close, increase) | |
| compact(verb, close, develop, secure) | |
| dry(verb, take, close, settle) | |
| firm(verb, close, settle, solid) | |
| fossilize(verb, close, settle, firm) | |
| concrete(verb, close, firm, solid) | |
| nerve(noun, verb, close, settle) | |
| callous(verb, close, settle, firm) | |
| caseharden(verb, close, continue, firm) | |
| crystallize(verb, form, close, develop) | |
| vitrify(verb, close, settle, firm) | |
| calcify(verb, close, settle, firm) | |
| gel(verb, form, develop, combine) | |
| gird(verb, support, close, settle) | |
| amalgamate(verb, close, meet, develop) |
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| APA | Smart Define. (2016). harden thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/harden/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "harden thesaurus" https://smartdefine.org/harden/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, harden thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/harden/thesaurus/synonyms>. |
| MLA | Smart Define. "harden thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/harden/thesaurus/synonyms> |