210 entries under hard topic. ×

1
unsupple(adjective, firm, solid, stiff)
1
wooden(adjective, strong, firm, solid)
0
uncooperative(adjective, mean, harsh, obstinate)
0
accustomed(adjective, straight, unfeeling, unsympathetic)
0
close-grained(tough, solid, rigid)
0
coldhearted(adjective, unfeeling, unsympathetic, response)
0
compacted(adjective, set, strong, firm)
0
consolidated(adjective, set, strong, firm)
0
cynical(adjective, set, fixed, unfeeling)
0
durable(adjective, strong, firm, solid)
0
ferric(adjective, strong, tough, sturdy)
0
ferrous(adjective, strong, tough, sturdy)
0
fine-grained(tough, solid, rigid)
0
habituated(adjective, unfeeling, unsympathetic, hardened)
0
hard-as-nails(adjective, unfeeling, unsympathetic, hardened)
0
impermeable(solid, rigid)
0
impious(adjective, unfeeling, unsympathetic, hardened)
0
inaccessible(adjective, unfeeling, unsympathetic, hardened)
0
irreverent(adjective, unfeeling, unsympathetic, hardened)
0
nonporous(tough, solid, rigid)
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APASmart Define. (2016). inflexible thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/inflexible/thesaurus/synonyms
ChicagoSmart Define. 2016. "inflexible thesaurus" https://smartdefine.org/inflexible/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, inflexible thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/inflexible/thesaurus/synonyms>.
MLASmart Define. "inflexible thesaurus" 24 March 2016. Web. 30 September 2026. <https://smartdefine.org/inflexible/thesaurus/synonyms>