80 entries under harden topic. ×
| habituate(verb, dull, develop, rough, prepare) | |
| increase(verb, support, establish, extend, powerful) | |
| jell(verb, close, set, fix, settle) | |
| make callous(verb, expression, dull, develop, rough) | |
| numb(verb, dull, develop, rough, adjust) | |
| paralyze(verb, dull, develop, rough, adjust) | |
| press(verb, close, set, fix, settle) | |
| render insensitive(verb, expression, dull, develop, rough) | |
| roughen(verb, dull, develop, rough, adjust) | |
| set(verb, close, fix, settle, firm) | |
| solidify(verb, close, set, fix, settle) | |
| stun(verb, dull, develop, rough, adjust) | |
| stupefy(verb, dull, develop, rough, adjust) | |
| teach(verb, dull, develop, rough, adjust) | |
| thicken(verb, close, set, fix, settle) | |
| wax(verb, support, increase, establish, extend) | |
| braze(verb, set) | |
| chill(verb, set) | |
| mold(verb, set) | |
| toughen up(verb, expression, set) |
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| APA | Smart Define. (2016). steel thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/steel/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "steel thesaurus" https://smartdefine.org/steel/thesaurus/synonyms (accessed October 1, 2026). |
| Harvard | Smart Define 2016, steel thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/steel/thesaurus/synonyms>. |
| MLA | Smart Define. "steel thesaurus" 24 January 2016. Web. 1 October 2026. <https://smartdefine.org/steel/thesaurus/synonyms> |