- Definitions|1
- Thesaurus|1.6k
- Abbreviations|0
80 entries under strong topic. ×
| stubborn(adjective, characteristic, quality, hard) | |
| mulish(adjective, hard, tough, firm) | |
| unyielding(adjective, hard, tough, determined) | |
| hard-nosed(adjective, hard, tough, determined) | |
| headstrong(adjective, tough, firm, resist) | |
| obstinate(adjective, resist, cold, determined) | |
| bullheaded(adjective, hard, tough, resist) | |
| inflexible(adjective, hard, tough, cold) | |
| pertinacious(adjective, tough, resist, cold) | |
| obdurate(adjective, hard, tough, determined) | |
| hard(adjective, sound, tough, reasonable) | |
| rigid(adjective, hard, tough, determined) | |
| stiff-necked(adjective, hard, tough, resist) | |
| unrelenting(adjective, hard, tough, cold) | |
| adamantine(adjective, hard, tough, firm) | |
| adamant(adjective, hard, tough, determined) | |
| inexorable(adjective, hard, tough, determined) | |
| relentless(adjective, hard, tough, cold) | |
| unbending(adjective, hard, tough, determined) | |
| immovable(adjective, hard, tough, determined) |
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| APA | Smart Define. (2015). hardheaded thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/hardheaded/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "hardheaded thesaurus" https://smartdefine.org/hardheaded/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, hardheaded thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/hardheaded/thesaurus/synonyms>. |
| MLA | Smart Define. "hardheaded thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/hardheaded/thesaurus/synonyms> |