95 entries under strong topic. ×
| stiff(adjective, feature, state, characteristic) | |
| firm(noun, adjective, feature, state, characteristic) | |
| inflexible(adjective, mean, hard, tough) | |
| unyielding(adjective, mean, hard, tough) | |
| stubborn(adjective, characteristic, quality, mean) | |
| hard(adjective, feature, state, characteristic, mean) | |
| obdurate(adjective, hard, tough, severe) | |
| unbending(adjective, mean, hard, tough) | |
| determined(adjective, hard, tough, severe) | |
| inexorable(adjective, mean, hard, tough) | |
| immovable(adjective, mean, hard, secure) | |
| unrelenting(adjective, mean, hard, tough) | |
| relentless(adjective, mean, hard, tough) | |
| severe(adjective, hard, tough, correct) | |
| strict(adjective, good, hard, tough) | |
| adamant(adjective, mean, hard, tough) | |
| harsh(adjective, mean, hard, tough) | |
| rigorous(adjective, hard, tough, correct) | |
| tight(adjective, close, secure, severe) | |
| hard-nosed(adjective, mean, hard, tough) |
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| APA | Smart Define. (2015). rigid thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/rigid/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "rigid thesaurus" https://smartdefine.org/rigid/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, rigid thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/rigid/thesaurus/synonyms>. |
| MLA | Smart Define. "rigid thesaurus" 3 August 2015. Web. 23 September 2026. <https://smartdefine.org/rigid/thesaurus/synonyms> |