- Definitions|2
- Thesaurus|950
- Abbreviations|0
86 entries under determined topic. ×
| hardheaded(adjective, strong, tough, firm, resist) | |
| opinionated(adjective, tough, firm, violent, wild) | |
| stiff-necked(adjective, tough, firm, resist) | |
| strong-willed(adjective, resolute, tenacious) | |
| resolute(adjective, hard, tough, sharp, firm) | |
| hard(adjective, sharp, resolute, stubborn) | |
| immovable(adjective, tough, resolute, stubborn) | |
| intransigent(adjective, tough, resolute, stubborn) | |
| unbending(adjective, hard, tough, rough, harsh) | |
| unrelenting(adjective, strong, tough, firm, cold) | |
| adamantine(adjective, resolute, uncompromising, unshakeable) | |
| firm(adjective, hard, tough, rough, harsh) | |
| inexorable(adjective, tough, firm, resolute) | |
| persistent(adjective, tough, firm, unreasonable) | |
| steadfast(adjective, tough, firm, unreasonable) | |
| stern(adjective, hard, tough, rough, harsh) | |
| relentless(adjective, strong, tough, cold) | |
| deliberate(adjective, resolute, intentional) | |
| fixed(adjective, tough, firm, unreasonable) | |
| fractious(adjective, violent, wild, deliberate) |
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| APA | Smart Define. (2015). headstrong thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/headstrong/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "headstrong thesaurus" https://smartdefine.org/headstrong/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, headstrong thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/headstrong/thesaurus/synonyms>. |
| MLA | Smart Define. "headstrong thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/headstrong/thesaurus/synonyms> |