159 entries under rigid topic. ×
| unsupple(adjective, hard, solid, stiff) | |
| uptight(adjective, tough, severe, harsh, fixed) | |
| wooden(adjective, hard, solid, stiff) | |
| draconian(adjective, tough, severe, harsh) | |
| ferric(adjective, strong, hard, tough, sturdy) | |
| ferrous(adjective, strong, hard, tough, sturdy) | |
| hard-and-fast(hard, inflexible, strict, obstinate) | |
| hitched(secure, inflexible, stubborn, immovable) | |
| hooked(secure, inflexible, stubborn, immovable) | |
| ironfisted(tough, scrupulous) | |
| located(secure, solid, stiff, inflexible) | |
| picky(adjective, tough, severe, harsh) | |
| prudish(adjective, tough, severe, harsh) | |
| punctilious(adjective, tough, severe, harsh) | |
| reserved(adjective, tough, solid, stable, fixed) | |
| situated(secure, solid, stiff, inflexible) | |
| stickling(adjective, tough, severe, harsh) | |
| stuffy(adjective, tough, severe, harsh) | |
| tough inflexible(expression, strong, hard, tough, sturdy) |
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| APA | Smart Define. (2016). firm thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/firm/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "firm thesaurus" https://smartdefine.org/firm/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, firm thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/firm/thesaurus/synonyms>. |
| MLA | Smart Define. "firm thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/firm/thesaurus/synonyms> |