121 entries under rigid topic. ×
| single-minded(firm, unreasonable, grim, reserved) | |
| tense | |
| unpermissive(adjective, severe, firm, harsh) | |
| uptight(adjective, severe, firm, harsh) | |
| close-grained(hard, solid, inflexible) | |
| compacted(adjective, firm, stiff, stubborn) | |
| congealed(hard, solid, inflexible) | |
| consolidated(adjective, firm, stiff, stubborn) | |
| dead set(expression, adjective, severe, firm, harsh) | |
| fine-grained(hard, solid, inflexible) | |
| impermeable(hard, solid) | |
| ironfisted | |
| nonporous(hard, solid, inflexible) | |
| packed(adjective, firm, stiff, stubborn) | |
| prudish(adjective, severe, firm, harsh) | |
| puritanical(adjective, severe, firm, harsh) | |
| square(adjective, severe, firm, harsh) | |
| stickling(adjective, severe, firm, harsh) | |
| straight(adjective, severe, firm, harsh) | |
| strait-laced(adjective, severe, firm, harsh, cruel) |
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| APA | Smart Define. (2016). tough thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/tough/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, tough thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>. |
| MLA | Smart Define. "tough thesaurus" 30 March 2016. Web. 29 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms> |