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36 entries under serious topic. ×

1
resolute(adjective, persistent, unwavering, gritty)
1
resolved(adjective, resolute, persistent, unwavering)
1
set(adjective, resolute, persistent, unwavering)
1
set on(expression, adjective, resolute, persistent)
1
settled(adjective, resolute, persistent, unwavering)
1
single-minded(adjective, resolute, persistent, unwavering)
1
solid(adjective, resolute, persistent, pat)
1
steadfast(adjective, resolute, persistent, unwavering)
1
strong-minded(adjective, resolute, persistent, pat)
1
strong-willed(adjective, resolute, persistent, unwavering)
1
tenacious(adjective, resolute, persistent, unwavering)
1
unfaltering(adjective, resolute, persistent, unwavering)
1
unflinching(adjective, resolute, persistent, unwavering)
1
unhesitating(adjective, resolute, persistent, unwavering)
1
unwavering(adjective, resolute, persistent, gritty)
0
hard as nails(expression, adjective, idiom, resolute)
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APASmart Define. (1970). buckled down thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/buckled_down/thesaurus/synonyms
ChicagoSmart Define. 1970. "buckled down thesaurus" https://smartdefine.org/buckled_down/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 1970, buckled down thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/buckled_down/thesaurus/synonyms>.
MLASmart Define. "buckled down thesaurus" 1 January 1970. Web. 28 September 2026. <https://smartdefine.org/buckled_down/thesaurus/synonyms>