- Definitions|1
- Thesaurus|483
- Abbreviations|0
| chronic | |
| circumspect(adjective, close, correct, firm, honest) | |
| coarse(vulgar, indecent, lewd, lustful, lascivious) | |
| confiding(adjective, close, correct, firm, honest) | |
| confirmed | |
| conscientious(adjective, close, correct, firm, honest) | |
| constant(adjective, close, correct, firm, honest) | |
| continuing | |
| contrary(determined, impulsive, stubborn, reckless, impetuous) | |
| cruel(adjective, strong, hard, tough, severe) | |
| dateless | |
| deathless | |
| deep-seated | |
| deep in thought | |
| dependable(adjective, close, correct, firm, honest) | |
| disciplinary(adjective, strong, hard, tough, severe) | |
| dour | |
| dutiful(adjective, close, correct, firm, honest) | |
| endless | |
| erotic(offensive, dirty, coarse, vulgar, indecent) |
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| APA | Smart Define. (2016). hard-core thesaurus. Retrieved September 22, 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 22, 2026). |
| Harvard | Smart Define 2016, hard-core thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/hard-core/thesaurus/synonyms>. |
| MLA | Smart Define. "hard-core thesaurus" 28 March 2016. Web. 22 September 2026. <https://smartdefine.org/hard-core/thesaurus/synonyms> |