- Definitions|1
- Thesaurus|483
- Abbreviations|0
189 entries under adjective topic. ×
| unyielding(strong, hard, tough, firm) | |
| uncompromising(severe, firm, harsh, stubborn) | |
| rigid(strong, hard, tough, severe) | |
| badass(noun, person, hector) | |
| faithful(close, correct, firm, honest) | |
| inflexible(strong, hard, tough, severe) | |
| intransigent | |
| obstinate(firm, determined, resolute, impulsive) | |
| stern(severe, firm, harsh, serious) | |
| hard(strong, tough, severe, firm) | |
| hardcore | |
| determined(firm, resolute, impulsive, stubborn) | |
| devoted(close, correct, firm, honest) | |
| die-hard(firm, honest, upright, sure) | |
| explicit | |
| inveterate | |
| resolute(close, correct, firm, honest) | |
| staunch(close, correct, firm, honest) | |
| steadfast(close, correct, firm, honest) | |
| adamant(strong, hard, tough, firm) |
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| APA | Smart Define. (2016). hard-core thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/hard-core/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hard-core thesaurus" https://smartdefine.org/hard-core/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, hard-core thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/hard-core/thesaurus/synonyms>. |
| MLA | Smart Define. "hard-core thesaurus" 28 March 2016. Web. 24 September 2026. <https://smartdefine.org/hard-core/thesaurus/synonyms> |