529 entries under adjective topic. ×

18
immune(strain, firmness, labour, hardiness)
18
lingering(strain, firmness, labour, hardiness)
18
permanent(strain, firmness, labour, hardiness)
18
rock-solid(hard, strain, firmness, compact)
17
inelastic(hard, tough, firm, solid)
17
mulish(mean, strong, hard, tough)
17
severe(appearance, mean, clear, strong)
17
stern(appearance, mean, hard, easy)
16
grim(appearance, mean, strong, hard)
15
steely(strong, hard, tough, firm)
14
iron(mean, strong, hard, tough)
14
perverse(mean, hard, tough, firm)
14
staunch(clear, strong, sound, tough)
14
unflinching(mean, strong, severe, flat)
14
unshakeable(determined, resolute, uncompromising)
13
bullheaded(strong, hard, tough, firm)
13
flinty(strong, hard, tough, severe)
13
harsh(mean, strong, hard, tough)
13
pigheaded(mean, hard, tough, firm)
13
remorseless(mean, harsh, resist, cruel)
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APASmart Define. (2016). unyielding thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unyielding/thesaurus/synonyms
ChicagoSmart Define. 2016. "unyielding thesaurus" https://smartdefine.org/unyielding/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, unyielding thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unyielding/thesaurus/synonyms>.
MLASmart Define. "unyielding thesaurus" 10 March 2016. Web. 29 September 2026. <https://smartdefine.org/unyielding/thesaurus/synonyms>