76 entries under strong topic. ×
| stable(adjective, solid, safe, sheltered) | |
| strapping | |
| thick(adjective, hard, tough, firm) | |
| adjusted(adjective, solid, stable, sure) | |
| anchored(adjective, solid, stable, sure) | |
| bound(verb, adjective, tough, firm) | |
| buttoned down(expression, adjective, solid, stable) | |
| callous(adjective, set, mean, hard) | |
| fixed(adjective, mean, hard, tough) | |
| fortified(adjective, solid, stable, sure) | |
| mulish(adjective, mean, hard, tough) | |
| nailed(adjective, solid, stable, sure) | |
| safe and sound(expression, adjective, idiom, solid) | |
| solid as a rock(expression, adjective, idiom, solid) | |
| staunch(adjective, set, hard, tough) | |
| steady(adjective, solid, resolution, stable) | |
| stony(adjective, set, hard, firm) | |
| sure(adjective, tough, firm, solid) | |
| tight(adjective, tough, firm, solid) | |
| unshakable(adjective, mean, 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> |