137 entries under obstinate topic. ×

7
unadaptable(adjective, set, hard, stiff, rigid)
6
contumacious(adjective, tough, firm, determined, unreasonable)
6
persevering(adjective, strong, tough, flat, firm)
6
sturdy(adjective, close, strong, hard, tough)
6
willful(adjective, tough, firm, determined, resolute)
5
bovine(adjective, determined, resolute, uncompromising)
5
brass-bound(adjective, determined, resolute, uncompromising)
5
narrow(adjective, hard, moderate, rough, firm)
5
ruthless(adjective, hard, rough, harsh, cruel)
5
true(adjective, strong, smooth, tough, flat)
4
bullheaded(adjective, strong, hard, tough, firm)
4
rough(adjective, person, strong, hard, tough)
4
taut(adjective, hard, rough, firm, harsh)
4
unruly(adjective, stubborn, willful)
4
wayward(adjective, stubborn, willful)
3
balky(adjective, tough, firm, unreasonable)
3
hanging(adjective, determined, resolute, uncompromising)
3
hard-and-fast(adjective, hard, strict, stubborn)
3
rebellious(adjective, tough, firm, unreasonable)
3
strong(adjective, set, hard, tough, flat)
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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>