150 entries under inflexible topic. ×

1
perverse(adjective, mean, hard, tough, firm)
1
rebellious(adjective, tough, firm, unreasonable)
1
recalcitrant(adjective, tough, firm, determined, unreasonable)
1
rheumatic(adjective, hard, firm, solid, stiff)
1
set in concrete(expression, idiom, steady, stable)
1
starched(adjective, hard, firm, solid, stiff)
1
starchy(adjective, hard, firm, solid, stiff)
1
stiff-necked(adjective, mean, hard, tough, firm)
1
stiff as a board(expression, adjective, idiom, hard, firm)
1
strong-minded(adjective, firm, determined, serious, resolute)
1
undiversified(adjective, set, regular, even, constant)
1
unflexible(adjective, hard, firm, solid, rigid)
1
ungraceful(adjective, hard, firm, solid, stiff)
1
unmanageable(tough, firm, determined, unreasonable)
1
unreasonable(tough, firm, obstinate, stubborn)
1
unsupple(adjective, hard, firm, solid, stiff)
1
untoward(tough, firm, unreasonable, obstinate)
1
wooden(adjective, hard, firm, solid, stiff)
0
bolshie(obstinate, willful)
0
cast-iron(adjective, intent, hard-and-fast)
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APASmart Define. (2016). fixed thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/fixed/thesaurus/synonyms
ChicagoSmart Define. 2016. "fixed thesaurus" https://smartdefine.org/fixed/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, fixed thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/fixed/thesaurus/synonyms>.
MLASmart Define. "fixed thesaurus" 16 March 2016. Web. 27 September 2026. <https://smartdefine.org/fixed/thesaurus/synonyms>