- Definitions|2
- Thesaurus|1.3k
- Abbreviations|0
133 entries under obstinate topic. ×
| unswerving(adjective, strong, tough, firm, intense) | |
| bound(adjective, strong, tough, firm, cruel) | |
| demanding(adjective, severe, difficult, persistent) | |
| headstrong(adjective, strong, tough, cold, determined) | |
| interminable(adjective, continue, determined, steady, persistent) | |
| pat(adjective, determined, resolute, uncompromising) | |
| brassbound(adjective, resist, determined, resolute, persistent) | |
| bullheaded(adjective, strong, hard, tough, determined) | |
| contrary(adjective, determined, resolute, persistent) | |
| die-hard(adjective, resist, determined, resolute, persistent) | |
| hard-shell(adjective, strong, hard, tough, severe) | |
| pigheaded(adjective, mean, hard, tough, determined) | |
| staunch(adjective, strong, tough, firm, determined) | |
| unchangeable(adjective, hard, resolute, rigid, inflexible) | |
| cussed(adjective, tough, severe, firm, unreasonable) | |
| hard-line(adjective, strong, hard, tough, firm) | |
| hell-bent(adjective, persistent, insistent, dogged) | |
| inelastic(adjective, determined, resolute, uncompromising) | |
| invincible(adjective, persistent, insistent, dogged) | |
| persisting(adjective, strong, tough, firm, determined) |
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| APA | Smart Define. (2015). relentless thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/relentless/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "relentless thesaurus" https://smartdefine.org/relentless/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, relentless thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/relentless/thesaurus/synonyms>. |
| MLA | Smart Define. "relentless thesaurus" 24 June 2015. Web. 29 September 2026. <https://smartdefine.org/relentless/thesaurus/synonyms> |