76 entries under determined topic. ×

44
firm(noun, adjective, mean, strong, hard)
43
stubborn(adjective, characteristic, quality, mean, strong)
38
resolute(adjective, obstinate, uncompromising, unshakeable)
37
inflexible(adjective, mean, strong, hard, secure)
32
immovable(adjective, mean, strong, hard, secure)
31
intransigent(adjective, resolute, obstinate, uncompromising)
31
rigid(adjective, mean, hard, unreasonable)
29
inexorable(adjective, mean, hard, tough)
29
obdurate(adjective, resolute, obstinate, stubborn)
29
uncompromising(adjective, mean, hard, secure, firm)
28
fixed(adjective, mean, strong, hard, complete)
25
stiff(adjective, resolute, obstinate, uncompromising)
25
unyielding(adjective, mean, strong, hard, secure)
24
insistent(adjective, resolute, obstinate, uncompromising)
23
unbending(adjective, mean, strong, hard, tough)
22
relentless(adjective, mean, strong, hard, tough)
20
set(adjective, strong, hard, secure, tough)
20
steadfast(adjective, firm, resolute, obstinate)
20
unrelenting(adjective, mean, hard, tough, certain)
20
unwavering(adjective, steady, definite, resolute)
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APASmart Define. (2015). unshakable thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unshakable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unshakable thesaurus" https://smartdefine.org/unshakable/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, unshakable thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unshakable/thesaurus/synonyms>.
MLASmart Define. "unshakable thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/unshakable/thesaurus/synonyms>