56 entries under stiff topic. ×
| condensed(verb, adjective, set, strong, hard) | |
| compact(adjective, set, strong, hard, tough) | |
| compressed(verb, adjective, set, hard, tough) | |
| solid(adjective, set, hard, complete, tough) | |
| thick(adjective, set, strong, hard, tough) | |
| compacted(verb, adjective, set, strong, hard) | |
| deep(adjective, activity, set, strong, solid) | |
| consolidated(verb, adjective, set, strong, hard) | |
| dense(adjective, set, strong, hard, tough) | |
| strong(adjective, set, strong, hard, tough) | |
| firm(adjective, set, strong, hard, solid) | |
| fixed(verb, adjective, set, strong, hard) | |
| hard(adjective, set, strong, great, tough) | |
| heavy(adjective, set, strong, hard, tough) | |
| close(adjective, set, strong, hard, tough) | |
| packed(adjective, set, strong, hard, firm) | |
| crowded(adjective, set, solid, heavy, deep) | |
| clotted(verb, adjective, set, solid, heavy) | |
| concrete(adjective, set, hard, tough, solid) | |
| impenetrable(adjective, set, hard, tough, firm) |
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| APA | Smart Define. (2015). concentrated thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/concentrated/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "concentrated thesaurus" https://smartdefine.org/concentrated/thesaurus/synonyms (accessed September 24, 2026). |
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| MLA | Smart Define. "concentrated thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/concentrated/thesaurus/synonyms> |