186 entries under adjective topic. ×

2
impervious
2
implacable(strong, hard, tough, severe)
2
leathery(strong, hard, solid, stiff)
2
petrified
2
remorseless
2
resistant(strong, hard, solid, stiff)
2
resolute
2
savage
2
silica
2
steeled(strong, hard, solid, stiff)
2
stony-hearted
2
strict(strong, hard, tough, severe)
2
strong(hard, tough, solid, stiff)
2
sturdy(strong, hard, tough, solid)
2
tyrannical(evil, nasty, harsh, cruel)
2
unmerciful
2
unmoved
2
unpitying
2
unsparing(close, strong, hard, tough)
2
vicious(evil, nasty, harsh, wicked)
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APASmart Define. (2015). flinty thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/flinty/thesaurus/synonyms
ChicagoSmart Define. 2015. "flinty thesaurus" https://smartdefine.org/flinty/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, flinty thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/flinty/thesaurus/synonyms>.
MLASmart Define. "flinty thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/flinty/thesaurus/synonyms>