210 entries under hard topic. ×

2
brittle(adjective, firm, solid, stiff)
2
casehardened(unfeeling, unsympathetic, hardened, obstinacy)
2
close(adjective, tough, solid, stiff)
2
compact(adjective, close, set, strong)
2
concentrated(adjective, set, strong, tough)
2
concrete(adjective, tough, solid, rigid)
2
indurated(adjective, set, strong, firm)
2
inured(adjective, careless, indifferent, cruel)
2
mean(adjective, harsh, obstinate, stubborn)
2
robust(adjective, strong, tough, solid)
2
rugged(adjective, set, strong, tough)
2
solidified(adjective, tough, firm, solid)
2
stalwart(adjective, strong, tough, firm)
2
unaffected(adjective, careless, indifferent, cruel)
2
unconcerned(adjective, careless, indifferent, cruel)
2
unflexible(adjective, tough, firm, solid)
2
ungraceful(adjective, strong, firm, solid)
2
unimpressionable(adjective, careless, indifferent, cruel)
2
unsubmissive(adjective, unfeeling, unsympathetic, hardened)
1
annealed(adjective, firm, solid, stiff)
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APASmart Define. (2016). inflexible thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/inflexible/thesaurus/synonyms
ChicagoSmart Define. 2016. "inflexible thesaurus" https://smartdefine.org/inflexible/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, inflexible thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/inflexible/thesaurus/synonyms>.
MLASmart Define. "inflexible thesaurus" 24 March 2016. Web. 29 September 2026. <https://smartdefine.org/inflexible/thesaurus/synonyms>