110 entries under strong topic. ×

17
set(verb, adjective, determined, resolute)
16
iron(noun, adjective, mean, hard)
15
implacable(adjective, mean, hard, tough)
15
unshakable(adjective, mean, hard, secure)
14
hard-nosed(adjective, mean, hard, secure)
14
tenacious(adjective, determined, resolute, persistent)
13
mulish(adjective, mean, hard, tough)
12
unwavering(adjective, secure, flat, firm)
11
flinty(adjective, hard, tough, firm)
11
grim(adjective, mean, hard, tough)
10
steely(adjective, hard, tough, resolute)
9
severe(adjective, mean, hard, tough)
8
persistent(adjective, tough, flat, firm)
8
rigorous(adjective, hard, tough, harsh)
8
stiff-necked(adjective, mean, hard, tough)
8
strict(adjective, hard, tough, flat)
7
harsh(adjective, mean, hard, tough)
7
resolved(adjective, flat, firm, certain)
7
unchangeable(adjective, secure, flat, certain)
6
hardheaded(adjective, hard, tough, determined)
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APASmart Define. (2016). adamant thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/adamant/thesaurus/synonyms
ChicagoSmart Define. 2016. "adamant thesaurus" https://smartdefine.org/adamant/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, adamant thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/adamant/thesaurus/synonyms>.
MLASmart Define. "adamant thesaurus" 23 March 2016. Web. 27 September 2026. <https://smartdefine.org/adamant/thesaurus/synonyms>