150 entries under inflexible topic. ×

62
firm(adjective, calm, change, set, mean)
56
set(verb, adjective, change, strong, hard)
50
determined(verb, adjective, set, clear, strong)
49
stubborn(adjective, characteristic, quality, mean, hard)
45
rigid(adjective, mean, hard, complete, secure)
40
immovable(adjective, move, mean, strong, hard)
32
inexorable(adjective, mean, hard, certain, determined)
32
unyielding(adjective, mean, strong, hard, sound)
29
obdurate(adjective, strong, hard, secure, flat)
29
unbending(adjective, mean, strong, hard, flat)
29
stiff(adjective, set, hard, secure, rough)
28
steadfast(adjective, move, calm, strong, complete)
26
unshakable(adjective, mean, strong, hard, complete)
23
unchangeable(adjective, strong, complete, secure, flat)
22
obstinate(adjective, mean, hard, rough, firm)
22
relentless(adjective, mean, hard, firm, determined)
20
unwavering(adjective, strong, secure, flat, firm)
19
adamant(adjective, mean, strong, hard, secure)
18
definite(adjective, set, clear, strong, complete)
18
enduring(adjective, strong, sound, tough, flat)
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APASmart Define. (2016). fixed thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/fixed/thesaurus/synonyms
ChicagoSmart Define. 2016. "fixed thesaurus" https://smartdefine.org/fixed/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, fixed thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/fixed/thesaurus/synonyms>.
MLASmart Define. "fixed thesaurus" 16 March 2016. Web. 25 September 2026. <https://smartdefine.org/fixed/thesaurus/synonyms>