- Definitions|1
- Thesaurus|483
- Abbreviations|0
| patriotic(adjective, close, correct, firm, honest) | |
| permanent | |
| perpetual | |
| pig-headed(determined, impulsive, stubborn, reckless, impetuous) | |
| pigheaded(firm, determined, resolute, impulsive, reckless) | |
| pornographic(offensive, dirty, coarse, vulgar, indecent) | |
| powerful | |
| rash(determined, impulsive, stubborn, reckless, impetuous) | |
| reckless(determined, impulsive, stubborn, impetuous) | |
| red-hot | |
| red hot | |
| refractory(firm, determined, impulsive, stubborn, reckless) | |
| reliable(adjective, close, correct, honest, true) | |
| ribald(coarse, vulgar, indecent, naughty, lewd) | |
| rock-ribbed | |
| rough(adjective, bad, strong, hard, tough) | |
| salacious(coarse, vulgar, indecent, naughty, lewd) | |
| scorching | |
| scrupulous(adjective, close, correct, firm, honest) | |
| scurrilous(coarse, vulgar, indecent, naughty, lewd) |
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| APA | Smart Define. (2016). hard-core thesaurus. Retrieved September 23, 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 23, 2026). |
| Harvard | Smart Define 2016, hard-core thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/hard-core/thesaurus/synonyms>. |
| MLA | Smart Define. "hard-core thesaurus" 28 March 2016. Web. 23 September 2026. <https://smartdefine.org/hard-core/thesaurus/synonyms> |