143 entries under inflexible topic. ×

1
heavy(adjective, strong, hard, tough, severe)
1
immalleable(adjective, hard, firm, solid, stiff)
1
irreversible(adjective, even, reliable, consistent)
1
jelled(adjective, hard, tough, firm, solid)
1
mechanical(adjective, hard, firm, solid, stiff)
1
nailed(secure, still, fixed, stubborn)
1
numbed(adjective, hard, firm, solid, stiff)
1
ordered(adjective, even, reliable, consistent)
1
ornery(adjective, tough, firm, unreasonable, grim)
1
ossified(adjective, hard, firm, solid, stiff)
1
petrified(adjective, hard, firm, solid, stiff)
1
rheumatic(adjective, hard, firm, solid, stiff)
1
stiff as a board(expression, adjective, idiom, hard, firm)
1
still(secure, passive, stubborn, motionless)
1
thickened(adjective, hard, firm, solid, stiff)
1
uncompassionate(adjective, mean, hard, harsh)
1
undiversified(adjective, set, regular, even, constant)
1
unimpressible(adjective, mean, hard, harsh)
1
unmodifiable(adjective, set, regular, even, constant)
1
unreasonable(tough, firm, obstinate, stubborn)
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APASmart Define. (2015). rigid thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/rigid/thesaurus/synonyms
ChicagoSmart Define. 2015. "rigid thesaurus" https://smartdefine.org/rigid/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, rigid thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/rigid/thesaurus/synonyms>.
MLASmart Define. "rigid thesaurus" 3 August 2015. Web. 30 September 2026. <https://smartdefine.org/rigid/thesaurus/synonyms>