- Definitions|1
- Thesaurus|1.6k
- Abbreviations|0
33 entries under firm topic. ×
| mulish(adjective, strong, hard, tough) | |
| headstrong(adjective, strong, tough, resist) | |
| pigheaded(adjective, tough, resist, determined) | |
| dogged(adjective, tough, resist, determined) | |
| willful(adjective, tough, resist, determined) | |
| self-willed(tough, determined, resolute, obstinate) | |
| tenacious(adjective, tough, resist, determined) | |
| adamantine(adjective, strong, hard, tough) | |
| opinionated(adjective, tough, determined, resolute) | |
| intractable(adjective, strong, tough, cold) | |
| perverse(adjective, tough, resist, determined) | |
| balky(tough, unreasonable, grim, inflexible) | |
| determined(adjective, tough, resolute, obstinate) | |
| implacable(adjective, strong, hard, tough) | |
| fixed(tough, determined, resolute, obstinate) | |
| persevering(tough, determined, unreasonable, grim) | |
| solid(adjective, inflexible, obstinate, stubborn) | |
| steadfast(tough, determined, resolute, obstinate) | |
| unshakable(tough, determined, resolute, obstinate) | |
| cantankerous(tough, unreasonable, grim, inflexible) |
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| APA | Smart Define. (2015). hardheaded thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/hardheaded/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "hardheaded thesaurus" https://smartdefine.org/hardheaded/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, hardheaded thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/hardheaded/thesaurus/synonyms>. |
| MLA | Smart Define. "hardheaded thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/hardheaded/thesaurus/synonyms> |