128 entries under hard topic. ×
| ferrous(adjective, strong, tough, sturdy) | |
| fibrous(adjective, strong, solid, stiff) | |
| fine-grained(solid, rigid) | |
| fit(adjective, strong, solid, stiff) | |
| forbidding(adjective, strong, tough, sturdy) | |
| frowning(adjective, strong, tough, sturdy) | |
| frozen(adjective, compact, rock-hard) | |
| grim(adjective, strong, tough, sturdy) | |
| hang-tough(adjective, strong, tough, sturdy) | |
| hard-boiled(adjective, strong, tough, sturdy) | |
| hard-core(adjective, strong, tough, sturdy) | |
| hard-line(adjective, strong, tough, sturdy) | |
| hard-nosed(adjective, strong, tough, sturdy) | |
| hard-shell(adjective, strong, tough, sturdy) | |
| hardheaded(adjective, strong, tough, sturdy) | |
| harsh(adjective, strong, tough, sturdy) | |
| hulk(adjective, strong, substantial, compact) | |
| hunk(adjective, strong, substantial, compact) | |
| immovable(adjective, strong, tough, sturdy) | |
| implacable(adjective, strong, tough, sturdy) |
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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> |