Synonyms|623Antonyms|91|Broader|55Narrower|33Related|470

178 entries under determined topic. ×

6
hardheaded(adjective, strong, hard, tough)
6
inelastic(adjective, resolute, obstinate, uncompromising)
6
persevering(adjective, strong, tough, flat, firm)
6
set in stone(expression, adjective, idiom, mean, hard)
5
brassbound(adjective, resist, resolute, persistent)
5
bullheaded(adjective, strong, hard, tough, firm)
5
die-hard(adjective, resist, resolute, persistent)
5
incompliant(adjective, resist, resolute, persistent)
5
merciless(adjective, person, mean, hard, rough)
5
unalterable(adjective, strong, hard, secure, severe)
5
unappeasable(adjective, mean, harsh, cruel)
5
unflinching(adjective, strong, flat, firm, harsh)
5
unswerving(adjective, strong, tough, firm)
5
willful(adjective, tough, resolute, obstinate)
4
hanging tough(expression, adjective, mean, hard)
4
hidebound(adjective, resolute, persistent, obstinate)
4
ossified(adjective, resolute, uncompromising, unshakeable)
4
standing pat(adjective, resolute, obstinate, unyielding)
4
staunch(adjective, strong, tough, flat, firm)
4
steady(adjective, strong, secure, flat, firm)
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HarvardSmart Define 2016, adamant thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/adamant/thesaurus/synonyms>.
MLASmart Define. "adamant thesaurus" 23 March 2016. Web. 28 September 2026. <https://smartdefine.org/adamant/thesaurus/synonyms>