| heart of oak(expression, idiom, strength, hardness) | |
| refresh(verb, encourage, strength, excite, prepare) | |
| season(verb, dull, close, set, develop) | |
| stiletto(noun, arms, cutter, sickle, blade) | |
| support(noun, verb, fix, increase, encourage) | |
| adamantine(adjective, strong, hard, tough, sturdy) | |
| anneal(verb, support, close, set, fix) | |
| bolo(noun, cutter, sickle, blade, machete) | |
| brass(noun, alloy) | |
| brick | |
| bronze(noun, alloy) | |
| callous(verb, dull, close, set, fix) | |
| case harden(expression, idiom, strength) | |
| concrete | |
| cutlass(noun, arms, cutter, sickle, blade) | |
| dirk(noun, arms) | |
| ferrous(adjective, strong, hard, tough, sturdy) | |
| flint | |
| granite | |
| make(verb, form, place, develop, plan) |
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| APA | Smart Define. (2016). steel thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/steel/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "steel thesaurus" https://smartdefine.org/steel/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, steel thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/steel/thesaurus/synonyms>. |
| MLA | Smart Define. "steel thesaurus" 24 January 2016. Web. 28 September 2026. <https://smartdefine.org/steel/thesaurus/synonyms> |