138 entries under stiff topic. ×
| starchy(adjective, hard, firm, sober, serious) | |
| strait-laced(severe, modest, polite, decent, moral) | |
| stringent(good, sound, right, reasonable, severe) | |
| syrupy(adjective, set, heavy, deep) | |
| turbid(adjective, set, heavy, deep) | |
| unalterable(calm, severe, fixed, constant) | |
| unflexible(adjective, hard, firm, tense) | |
| ungraceful(adjective, hard, firm, tense) | |
| unsupple(adjective, hard, firm, tense) | |
| vitrified(adjective, set, heavy, deep) | |
| wooden(adjective, hard, firm, tense) | |
| hard and fast(expression, adjective, idiom, firm) | |
| hardened inflexible(expression, firm, inflexible, unbending) | |
| indurated(adjective, set, strong, hard, firm) | |
| placed(adjective, firm, inflexible, unbending) | |
| positioned(adjective, firm, inflexible, unbending) | |
| sited(adjective, firm, inflexible, unbending) | |
| situate(adjective, firm, inflexible, unbending) |
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| APA | Smart Define. (2016). solid thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/solid/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "solid thesaurus" https://smartdefine.org/solid/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, solid thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/solid/thesaurus/synonyms>. |
| MLA | Smart Define. "solid thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/solid/thesaurus/synonyms> |