138 entries under rigid topic. ×
| unbending(adjective, mean, strong, tough, severe) | |
| unrelenting(adjective, mean, strong, tough, severe) | |
| impenetrable(adjective, characteristic, tough, firm, solid) | |
| heavy(adjective, person, dull, body, strong) | |
| steely(adjective, strong, tough, firm, solid) | |
| compact(adjective, characteristic, set, strong, tough) | |
| sturdy(adjective, person, set, body, strong) | |
| unsparing(adjective, mean, strong, tough, severe) | |
| concrete(adjective, clear, strong, tough, solid) | |
| dense(adjective, person, body, strong, tough) | |
| immovable(adjective, mean, strong, tough, cruel) | |
| powerful(adjective, person, body, strong, great) | |
| rocky(adjective, firm, delicate, stiff) | |
| stringent(adjective, tough, severe, rough, firm) | |
| close(adjective, adverb, strong, tough, correct) | |
| determined(adjective, strong, tough, severe, harsh) | |
| thick(adjective, person, body, strong, tough) | |
| unbreakable(adjective, strong, severe, firm, harsh) | |
| set(adjective, mean, strong, tough, severe) | |
| concentrated(adjective, set, strong, great, tough) |
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| APA | Smart Define. (2016). hard thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/hard/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hard thesaurus" https://smartdefine.org/hard/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, hard thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/hard/thesaurus/synonyms>. |
| MLA | Smart Define. "hard thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/hard/thesaurus/synonyms> |