- Definitions|2
- Thesaurus|1.3k
- Abbreviations|0
105 entries under strong topic. ×
| serious(adjective, close, hard, tough) | |
| stable(adjective, secure, flat, determined) | |
| steady(adjective, secure, flat, determined) | |
| sturdy(adjective, hard, tough, firm) | |
| sure(adjective, tough, flat, firm) | |
| unqualified(adjective, flat, intense, certain) | |
| bent(certain, definite, resolved, unalterable) | |
| by the book(expression, adjective, idiom, hard) | |
| consistent(certain, definite, resolved, unalterable) | |
| disciplinary(adjective, hard, tough, sturdy) | |
| explicit(certain, definite, resolved, unalterable) | |
| ferric(adjective, hard, tough, sturdy) | |
| ferrous(adjective, hard, tough, sturdy) | |
| frowning(adjective, hard, tough, sturdy) | |
| going(certain, definite, resolved, unalterable) | |
| mortified(adjective, hard, tough, sturdy) | |
| prevailing(certain, definite, resolved, unalterable) | |
| robust(adjective, hard, tough, sturdy) | |
| rock hard(expression, adjective, hard, tough) | |
| specific(certain, definite, resolved, unalterable) |
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| APA | Smart Define. (2016). obdurate thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/obdurate/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "obdurate thesaurus" https://smartdefine.org/obdurate/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, obdurate thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/obdurate/thesaurus/synonyms>. |
| MLA | Smart Define. "obdurate thesaurus" 23 March 2016. Web. 27 September 2026. <https://smartdefine.org/obdurate/thesaurus/synonyms> |