78 entries under sturdy topic. ×
| disciplinary(adjective, strong, hard, tough) | |
| dyed-in-the-wool(adjective, strong, hard, tough) | |
| ferric(adjective, strong, hard, tough) | |
| ferrous(adjective, strong, hard, tough) | |
| fibrous(adjective, strong, hard, solid, stiff) | |
| fit(adjective, strong, hard, solid, stiff) | |
| forbidding(adjective, strong, hard, tough) | |
| frowning(adjective, strong, hard, tough) | |
| grim(adjective, strong, hard, tough) | |
| hang-tough(adjective, strong, hard, tough) | |
| hard-boiled(adjective, strong, hard, tough) | |
| hard-core(adjective, strong, hard, tough) | |
| hard-line(adjective, strong, hard, tough) | |
| hard-nosed(adjective, strong, hard, tough) | |
| hard-shell(adjective, strong, hard, tough) | |
| hardheaded(adjective, strong, hard, tough) | |
| harsh(adjective, strong, hard, tough) | |
| immovable(adjective, strong, hard, tough) | |
| implacable(adjective, strong, hard, tough) | |
| indomitable(adjective, strong, hard, tough) |
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| APA | Smart Define. (2015). dense thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/dense/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "dense thesaurus" https://smartdefine.org/dense/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, dense thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/dense/thesaurus/synonyms>. |
| MLA | Smart Define. "dense thesaurus" 17 July 2015. Web. 25 September 2026. <https://smartdefine.org/dense/thesaurus/synonyms> |