66 entries under hard topic. ×

21
inflexible(adjective, tough, firm, solid)
19
unyielding(adjective, tough, firm, solid)
18
rigid(adjective, tough, severe, firm)
15
stiff(adjective, tough, firm, solid)
13
firm(noun, adjective, tough, solid)
7
brittle(adjective, firm, solid, tense)
6
tough(adjective, determined, resolute, rigid)
5
crisp(adjective, tough, firm, stiff)
4
set(adjective, tough, severe, firm)
4
solid(adjective, tough, severe, firm)
4
steely(adjective, firm, solid, stiff)
3
resistant(adjective, firm, solid, determined)
2
compact(adjective, solid, rigid)
2
compressed(adjective, tough, solid, rigid)
2
concentrated(adjective, tough, solid, rigid)
2
condensed(adjective, tough, solid, rigid)
2
impliable(adjective, firm, solid, stiff)
2
incompliant(adjective, tough, severe, firm)
2
stark(adjective, firm, solid, stiff)
2
stony(adjective, firm, solid, stiff)
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APASmart Define. (2015). inelastic thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/inelastic/thesaurus/synonyms
ChicagoSmart Define. 2015. "inelastic thesaurus" https://smartdefine.org/inelastic/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, inelastic thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/inelastic/thesaurus/synonyms>.
MLASmart Define. "inelastic thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/inelastic/thesaurus/synonyms>