135 entries under persistent topic. ×

14
unflinching(adjective, mean, strong, severe, flat)
13
harsh(adjective, mean, strong, hard, tough)
13
pigheaded(adjective, mean, hard, tough, firm)
13
remorseless(adjective, mean, harsh, resist, cruel)
13
solid(adjective, set, strong, hard, sound)
12
ruthless(adjective, appearance, mean, strong, hard)
12
unswerving(adjective, strong, tough, firm, determined)
11
strict(adjective, strong, hard, tough, easy)
10
rigorous(adjective, strong, hard, tough, harsh)
9
cruel(adjective, appearance, mean, strong, hard)
9
merciless(adjective, appearance, mean, hard, tough)
9
unforgiving(adjective, mean, hard, tough, severe)
8
persevering(adjective, strong, tough, flat, firm)
7
brassbound(adjective, resist, determined, resolute)
7
die-hard(adjective, resist, determined, resolute)
7
pitiless(adjective, mean, hard, tough, severe)
7
sturdy(adjective, set, strong, hard, sound)
7
unfaltering(adjective, strong, firm, intense, certain)
6
single-minded(adjective, tough, firm, harsh, cruel)
6
stalwart(adjective, strong, hard, sound, tough)
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APASmart Define. (2016). unyielding thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unyielding/thesaurus/synonyms
ChicagoSmart Define. 2016. "unyielding thesaurus" https://smartdefine.org/unyielding/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, unyielding thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unyielding/thesaurus/synonyms>.
MLASmart Define. "unyielding thesaurus" 10 March 2016. Web. 24 September 2026. <https://smartdefine.org/unyielding/thesaurus/synonyms>