76 entries under strong topic. ×
| vital | |
| compacted(adjective, set, hard, firm) | |
| compressed(adjective, set, hard, firm) | |
| concentrated(adjective, set, hard, firm) | |
| consolidated(adjective, set, hard, firm) | |
| fastened(adjective, solid, stable, sure) | |
| hard-handed(adjective, set, hard, compact) | |
| hard as nails(expression, adjective, idiom, set) | |
| hardened(adjective, set, hard, firm) | |
| impenetrable(adjective, set, hard, firm) | |
| indurated(adjective, set, hard, firm) | |
| locked(adjective, solid, stable, sure) | |
| packed(adjective, set, hard, firm) | |
| rock hard(expression, adjective, hard, tough) | |
| sound(adjective, solid, stable, sure) | |
| tough inflexible(expression, adjective, hard, tough) |
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| APA | Smart Define. (2015). iron thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/iron/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "iron thesaurus" https://smartdefine.org/iron/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, iron thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/iron/thesaurus/synonyms>. |
| MLA | Smart Define. "iron thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/iron/thesaurus/synonyms> |