62 entries under strong topic. ×
| astringent(adjective, hard, tough, sturdy) | |
| authoritarian(adjective, hard, tough, sturdy) | |
| bitter(adjective, hard, tough, sturdy) | |
| bullheaded(adjective, hard, tough, sturdy) | |
| by the book(expression, adjective, idiom, hard) | |
| cruel(adjective, hard, tough, sturdy) | |
| dense(adjective, hard, tough, sturdy) | |
| determined(adjective, hard, tough) | |
| disciplinary(adjective, hard, tough, sturdy) | |
| dyed-in-the-wool(adjective, hard, tough, sturdy) | |
| flinty(adjective, hard, tough, sturdy) | |
| forbidding(adjective, hard, tough, sturdy) | |
| frowning(adjective, hard, tough, sturdy) | |
| grim(adjective, hard, tough, sturdy) | |
| hang-tough(adjective, hard, tough, sturdy) | |
| hard-boiled(adjective, hard, tough, sturdy) | |
| hard-core(adjective, hard, tough, sturdy) | |
| hard-line(adjective, hard, tough, sturdy) | |
| hard-nosed(adjective, hard, tough, sturdy) | |
| hard-shell(adjective, hard, tough, sturdy) |
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| APA | Smart Define. (2016). steel thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/steel/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "steel thesaurus" https://smartdefine.org/steel/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2016, steel thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/steel/thesaurus/synonyms>. |
| MLA | Smart Define. "steel thesaurus" 24 January 2016. Web. 30 September 2026. <https://smartdefine.org/steel/thesaurus/synonyms> |