123 entries under strict topic. ×
| prescribed(adjective, firm, proper, determined, usual) | |
| rough(adjective, strong, hard, tough, severe) | |
| systematic(adjective, correct, solid, exact, proper) | |
| unpermissive(adjective, hard, tough, severe, rough) | |
| violent(adjective, harsh, cruel, brutal) | |
| arduous(adjective, hard, tough, severe, rough) | |
| bullheaded(adjective, strong, hard, tough, severe) | |
| by the book(expression, adjective, idiom, strong, hard) | |
| dyed-in-the-wool(adjective, set, strong, hard, tough) | |
| explicit(adjective, correct, solid, exact, proper) | |
| forbidding(adjective, strong, hard, tough, severe) | |
| hard-and-fast(hard, inflexible, obstinate, stubborn) | |
| heavy(adjective, strong, hard, tough, severe) | |
| iron-fisted(adjective, tough, severe, firm, harsh) | |
| lawful(adjective, good, honest, fair, pure) | |
| locked in(expression, adjective, tough, severe, firm) | |
| picky(adjective, tough, severe, firm, harsh) | |
| tough nut to crack(expression, adjective, idiom, mean, hard) | |
| trying(adjective, tough, severe, harsh, grim) | |
| binding(severe, harsh, affected, tight) |
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| APA | Smart Define. (2015). rigid thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/rigid/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "rigid thesaurus" https://smartdefine.org/rigid/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, rigid thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/rigid/thesaurus/synonyms>. |
| MLA | Smart Define. "rigid thesaurus" 3 August 2015. Web. 25 September 2026. <https://smartdefine.org/rigid/thesaurus/synonyms> |