121 entries under rigid topic. ×
| no-nonsense(adjective, severe, sharp, firm, harsh) | |
| resolved(adjective, resolute) | |
| solidified(adjective, hard, solid, inflexible) | |
| Draconian(adjective, severe, firm, harsh) | |
| by the book(expression, adjective, idiom, strong, hard) | |
| careful(adjective, complete, harsh, exact, full) | |
| close(adjective, hard, solid, inflexible) | |
| compact(adjective, set, hard, firm, solid) | |
| concentrated(adjective, set, strong, hard, firm) | |
| definite | |
| disciplinary(adjective, strong, hard, severe, firm) | |
| imperious(adjective, hard, smart, difficult, harsh) | |
| incompliant(adjective, firm, difficult, informal, awkward) | |
| indurated(adjective, hard, firm, careless, indifferent) | |
| iron-fisted(adjective, severe, firm, harsh) | |
| nit-picking(adjective, rough, harsh, strict) | |
| persnickety(adjective, harsh, strict, thorough) | |
| picky(adjective, severe, firm, harsh, grim) | |
| punctilious(adjective, severe, firm, harsh, careful) | |
| scrupulous(adjective, complete, severe, firm, harsh) |
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| APA | Smart Define. (2016). tough thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/tough/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, tough thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>. |
| MLA | Smart Define. "tough thesaurus" 30 March 2016. Web. 28 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms> |