- Definitions|2
- Thesaurus|652
- Abbreviations|0
| gritty | |
| grousing(mean, cross, irritable, ugly, obstinate) | |
| growling(mean, cross, irritable, ugly, obstinate) | |
| gutsy | |
| gutty | |
| hang tough(expression, tough, sharp, difficult, awkward) | |
| hanging(adjective, determined, resolute, obstinate, uncompromising) | |
| hard-headed | |
| hard-line(tough, firm, difficult, determined, awkward) | |
| hard-working | |
| hell-bent | |
| ill-natured(mean, cross, irritable, ugly, obstinate) | |
| implacable(adjective, determined, resolute, uncompromising, unshakeable) | |
| inalterable | |
| incessant(adjective, strong, firm, determined, steady) | |
| incurable(tough, difficult, awkward, obstinate, stubborn) | |
| indocile(tough, difficult, awkward, obstinate, stubborn) | |
| inexhaustible(adjective, strong, firm, energetic, determined) | |
| insoluble(tough, difficult, awkward, obstinate, stubborn) | |
| instant |
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| APA | Smart Define. (2015). pertinacious thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/pertinacious/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "pertinacious thesaurus" https://smartdefine.org/pertinacious/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, pertinacious thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/pertinacious/thesaurus/synonyms>. |
| MLA | Smart Define. "pertinacious thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/pertinacious/thesaurus/synonyms> |