30 entries under rigid topic. ×
| substantial(hard, solid, heavy, thick) | |
| tough(adjective, hard, solid, inflexible) | |
| close-grained(hard, tough, solid, inflexible) | |
| congealed(noun, verb, adjective, set, hard) | |
| fine-grained(hard, tough, solid, inflexible) | |
| impervious(adjective, set, hard, tough, solid) | |
| jelled(verb, adjective, set, hard, tough) | |
| set(verb, adjective, hard, tough, solid) | |
| refractory(hard, tough, solid, inflexible) | |
| sturdy(hard, tough, solid, inflexible) |
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| APA | Smart Define. (2015). condensed thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/condensed/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "condensed thesaurus" https://smartdefine.org/condensed/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, condensed thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/condensed/thesaurus/synonyms>. |
| MLA | Smart Define. "condensed thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/condensed/thesaurus/synonyms> |