136 entries under strong topic. ×

1
hard-bitten(adjective, hard, rough, harsh)
1
hard-shell(adjective, hard, tough, severe)
1
heavy(adjective, hard, tough, severe)
1
insensible(adjective, hard, tough, careless)
1
intent(adjective, flat, firm, certain)
1
mortified(adjective, hard, tough, severe)
1
never-failing(adjective, flat, certain, determined)
1
prim(stiff, rigid, standoffish, solemn)
1
secure(adjective, close, firm, steady)
1
serious(adjective, hard, tough, severe)
1
stand pat(expression, firm, steady, definite)
1
starchy(adjective, hard, firm, solid)
1
stated(adjective, flat, certain, determined)
1
stipulated(adjective, flat, certain, determined)
1
stout(adjective, hard, tough, firm)
1
thick(adjective, hard, tough, firm)
1
unbreakable(adjective, hard, severe, firm)
1
unqualified(adjective, flat, certain, determined)
1
wooden(adjective, hard, firm, solid)
0
artificial(affected, strained, standoffish, formal)
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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>