158 entries under inflexible topic. ×

6
indurate(adjective, mean, hard, firm, determined)
6
persistent(adjective, strong, tough, severe, flat)
6
pigheaded(adjective, mean, hard, tough, determined)
6
precise(adjective, correct, severe, certain, limited)
6
refractory(adjective, hard, tough, rough, firm)
6
stony(adjective, hard, firm, solid, careless)
6
tenacious(adjective, clear, strong, tough, severe)
6
undeviating(adjective, strong, flat, harsh, certain)
5
decided(adjective, firm, certain, determined, limited)
5
hardened(adjective, hard, firm, solid, careless)
5
persevering(adjective, strong, tough, flat, firm)
5
resistant(adjective, hard, firm, determined, resolute)
5
solid(adjective, hard, firm, stiff, tense)
5
stark(adjective, hard, severe, firm, solid)
4
bullheaded(adjective, strong, hard, tough, firm)
4
hard-hearted(adjective, mean, hard, harsh)
4
immutable(adjective, hard, firm, rigid)
4
single-minded(adjective, tough, harsh, cruel, determined)
4
tense(adjective, hard, firm, solid, stiff)
3
definite(adjective, strong, flat, firm, certain)
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APASmart Define. (2016). unbending thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/unbending/thesaurus/synonyms
ChicagoSmart Define. 2016. "unbending thesaurus" https://smartdefine.org/unbending/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, unbending thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/unbending/thesaurus/synonyms>.
MLASmart Define. "unbending thesaurus" 24 March 2016. Web. 1 October 2026. <https://smartdefine.org/unbending/thesaurus/synonyms>