6
firmly(adverb, sharply, solidly, tightly, steadfastly)
4
resolutely
3
bravely(adverb, courageously)
3
stably(adverb, well, severely, thoroughly, strongly)
3
steadfastly
3
unfalteringly
2
doggedly
2
fixedly(adverb, thoroughly, strongly, firmly, sharply)
2
intently
2
dauntlessly
2
determinedly
2
diligently
2
durably(adverb, well, severely, thoroughly, strongly)
2
enduringly(adverb, well, severely, thoroughly, strongly)
2
faithfully
2
fearlessly
2
industriously
2
intrepidly
2
like a rock(expression, idiom, adverb, thoroughly, strongly)
2
motionlessly(adverb, well, severely, thoroughly, strongly)
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APASmart Define. (2015). unflinchingly thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unflinchingly/thesaurus/synonyms
ChicagoSmart Define. 2015. "unflinchingly thesaurus" https://smartdefine.org/unflinchingly/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, unflinchingly thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unflinchingly/thesaurus/synonyms>.
MLASmart Define. "unflinchingly thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/unflinchingly/thesaurus/synonyms>