1
strapping
1
strenuous
1
strict(adjective, persistent, obstinate, insistent, dogged)
1
strong(tough, solid, determined, noble, bold)
1
substantial
1
tough(strong, solid, determined, noble, bold)
1
unconquerable(adjective, persistent, obstinate, insistent, dogged)
1
uncooperative(adjective, persistent, obstinate, insistent, dogged)
1
unflinching(adjective, persistent, obstinate, insistent, dogged)
1
ungovernable(adjective, persistent, obstinate, insistent, dogged)
1
unmanageable(adjective, persistent, obstinate, insistent, dogged)
1
unregenerate(adjective, persistent, obstinate, insistent, dogged)
1
unruly(adjective, persistent, obstinate, insistent, dogged)
1
venturous(strong, tough, noble, bold, resolute)
1
vigorous
1
warehouse
1
wayward(adjective, persistent, obstinate, insistent, dogged)
1
wrongheaded(adjective, persistent, obstinate, insistent, dogged)
0
abrupt
0
adamant(adjective, persistent, obstinate, insistent, dogged)
10 years ago|7.1k views|share |citing 
APASmart Define. (2016). stouthearted thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/stouthearted/thesaurus/synonyms
ChicagoSmart Define. 2016. "stouthearted thesaurus" https://smartdefine.org/stouthearted/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, stouthearted thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/stouthearted/thesaurus/synonyms>.
MLASmart Define. "stouthearted thesaurus" 23 March 2016. Web. 25 September 2026. <https://smartdefine.org/stouthearted/thesaurus/synonyms>