61 entries under tough topic. ×

6
refractory(adjective, firm, determined, unreasonable)
6
unshakable(adjective, mean, strong, hard)
5
strong(adjective, firm, energetic, determined)
4
recalcitrant(adjective, firm, unreasonable, grim)
3
contumacious(adjective, firm, determined, unreasonable)
3
true(adjective, strong, firm, determined)
2
balky(firm, unreasonable, grim, inflexible)
2
bound(adjective, strong, firm, harsh)
2
cussed(adjective, firm, unreasonable, grim)
2
iron(adjective, mean, strong, hard)
2
rebellious(adjective, firm, unreasonable, grim)
2
remorseless(adjective, firm, harsh, cruel)
1
cantankerous(firm, determined, unreasonable, fixed)
1
fast(adjective, strong, firm, determined)
1
insubordinate(firm, unreasonable, grim, inflexible)
1
ornery(firm, unreasonable, grim, inflexible)
1
solid(adjective, strong, firm, determined)
1
uncompliant(adjective, firm, unreasonable, grim)
1
unmanageable(firm, determined, unreasonable, fixed)
1
unreasonable(firm, grim, inflexible, obstinate)
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APASmart Define. (2015). dogged thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/dogged/thesaurus/synonyms
ChicagoSmart Define. 2015. "dogged thesaurus" https://smartdefine.org/dogged/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, dogged thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/dogged/thesaurus/synonyms>.
MLASmart Define. "dogged thesaurus" 13 April 2015. Web. 30 September 2026. <https://smartdefine.org/dogged/thesaurus/synonyms>