206 entries under rigid topic. ×

96
stubborn(adjective, determined, resolute, uncompromising, obstinate)
87
unyielding(adjective, mean, strong, hard, secure)
81
uncompromising(adjective, mean, hard, secure, tough)
74
obdurate(adjective, person, strong, hard, secure)
70
unbending(adjective, mean, strong, hard, tough)
67
resolute(adjective, strong, hard, secure, tough)
67
inexorable(adjective, mean, strong, hard, tough)
66
firm(noun, adjective, mean, strong, hard)
63
determined(adjective, strong, tough, flat, firm)
57
stiff(adjective, hard, tough, severe, rough)
56
obstinate(adjective, mean, strong, hard, tough)
56
unrelenting(adjective, mean, strong, hard, tough)
53
immovable(adjective, mean, strong, hard, secure)
52
adamant(adjective, person, mean, strong, hard)
51
relentless(adjective, mean, strong, hard, tough)
46
fixed(adjective, mean, strong, hard, secure)
43
set(adjective, strong, hard, secure, tough)
38
unshakable(adjective, mean, strong, hard, secure)
33
hard(adjective, mean, strong, tough, severe)
32
steadfast(adjective, strong, secure, tough, flat)
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APASmart Define. (2016). inflexible thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/inflexible/thesaurus/synonyms
ChicagoSmart Define. 2016. "inflexible thesaurus" https://smartdefine.org/inflexible/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, inflexible thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/inflexible/thesaurus/synonyms>.
MLASmart Define. "inflexible thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/inflexible/thesaurus/synonyms>