497 entries under adjective topic. ×

28
unshakable(determined, resolute, obstinate, stubborn)
25
hard-nosed(strong, hard, secure, tough)
25
stony(person, mean, hard, cool)
24
steadfast(strong, secure, tough, flat)
23
adamantine(strong, hard, tough, resist)
23
dogged(strong, tough, firm, harsh)
23
set(strong, determined, resolute, obstinate)
22
mulish(strong, hard, tough, firm)
22
unbendable(resist, determined, resolute, persistent)
21
tough(mean, strong, hard, cool)
19
hardened(person, hard, tough, severe)
18
tenacious(strong, determined, resolute, obstinate)
17
callous(person, mean, hard, cool)
16
grim(mean, strong, hard, tough)
16
implacable(mean, strong, hard, tough)
16
intractable(tough, firm, difficult, violent)
16
severe(mean, strong, hard, tough)
16
unwavering(strong, secure, flat, certain)
15
perverse(mean, tough, firm, harsh)
15
stern(mean, hard, tough, severe)
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APASmart Define. (2016). obdurate thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/obdurate/thesaurus/synonyms
ChicagoSmart Define. 2016. "obdurate thesaurus" https://smartdefine.org/obdurate/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, obdurate thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/obdurate/thesaurus/synonyms>.
MLASmart Define. "obdurate thesaurus" 23 March 2016. Web. 25 September 2026. <https://smartdefine.org/obdurate/thesaurus/synonyms>