143 entries under inflexible topic. ×

28
tight(adjective, close, strong, secure, severe)
27
refractory(adjective, hard, tough, strain, firm)
25
resistant(adjective, strong, strain, firm, stiff)
22
tough(adjective, mean, strong, hard, easy)
20
solid(adjective, strong, hard, complete, secure)
17
inelastic(adjective, hard, tough, severe, firm)
15
iron(adjective, mean, strong, hard, tough)
12
dogged(adjective, mean, hard, harsh, cruel)
12
mulish(adjective, mean, strong, hard, tough)
12
steely(adjective, strong, hard, tough, firm)
12
tense(adjective, hard, firm, solid, stiff)
11
incompliant(adjective, tough, severe, firm, resist)
9
stiff-necked(adjective, mean, strong, hard, tough)
9
close(adjective, hard, tough, correct, severe)
9
taut(adjective, hard, firm, solid, stiff)
8
stony(adjective, set, hard, firm, solid)
8
hardheaded(adjective, strong, hard, tough, determined)
8
single-minded(adjective, tough, severe, firm, harsh)
7
hard-line(adjective, strong, hard, tough, severe)
7
pigheaded(adjective, mean, hard, tough, firm)
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APASmart Define. (2015). rigid thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/rigid/thesaurus/synonyms
ChicagoSmart Define. 2015. "rigid thesaurus" https://smartdefine.org/rigid/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, rigid thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/rigid/thesaurus/synonyms>.
MLASmart Define. "rigid thesaurus" 3 August 2015. Web. 29 September 2026. <https://smartdefine.org/rigid/thesaurus/synonyms>