3
confirmed(adjective, honest, pure, sure, constant)
3
cut off(verb, expression, phrasal verb, stop, break)
3
doughty(strong, resolute, courageous, fearless, plucky)
3
durable(adjective, calm, strong, sound, secure)
3
enthusiastic(adjective, keen, devoted)
3
fervent(adjective, clear, tough, severe, determined)
3
gritty(steady, courageous, unwavering, fearless, plucky)
3
hale(adjective, health, strong, sound, tough)
3
healthy(adjective, health, strong, sound, tough)
3
insistent(adjective, resolute, tenacious)
3
intent(adjective, strong, flat, intense, certain)
3
invincible
3
muscular(adjective, strong, sound, tough, fit)
3
patient(adjective, strong, firm, determined, steady)
3
religious(adjective, spiritual, devoted, pious)
3
rooted
3
spirited(adjective, strong, resolute, courageous, fearless)
3
stony(adjective, cold, indifferent, impassive, steadfast)
3
strict(adjective, close, set, strong, correct)
3
suppress
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APASmart Define. (2015). staunch thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/staunch/thesaurus/synonyms
ChicagoSmart Define. 2015. "staunch thesaurus" https://smartdefine.org/staunch/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, staunch thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/staunch/thesaurus/synonyms>.
MLASmart Define. "staunch thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/staunch/thesaurus/synonyms>