1
gritty
1
grousing(mean, cross, irritable, ugly, obstinate)
1
growling(mean, cross, irritable, ugly, obstinate)
1
gutsy
1
gutty
1
hang tough(expression, tough, sharp, difficult, awkward)
1
hanging(adjective, determined, resolute, obstinate, uncompromising)
1
hard-headed
1
hard-line(tough, firm, difficult, determined, awkward)
1
hard-working
1
hell-bent
1
ill-natured(mean, cross, irritable, ugly, obstinate)
1
implacable(adjective, determined, resolute, uncompromising, unshakeable)
1
inalterable
1
incessant(adjective, strong, firm, determined, steady)
1
incurable(tough, difficult, awkward, obstinate, stubborn)
1
indocile(tough, difficult, awkward, obstinate, stubborn)
1
inexhaustible(adjective, strong, firm, energetic, determined)
1
insoluble(tough, difficult, awkward, obstinate, stubborn)
1
instant
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APASmart Define. (2015). pertinacious thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/pertinacious/thesaurus/synonyms
ChicagoSmart Define. 2015. "pertinacious thesaurus" https://smartdefine.org/pertinacious/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, pertinacious thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/pertinacious/thesaurus/synonyms>.
MLASmart Define. "pertinacious thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/pertinacious/thesaurus/synonyms>