124 entries under hard topic. ×

62
firm(adjective, calm, change, set, mean)
56
set(verb, adjective, change, strong)
49
stubborn(adjective, characteristic, quality, mean)
45
rigid(adjective, mean, complete, secure)
44
resolute(adjective, set, strong, secure)
40
immovable(adjective, move, mean, strong)
40
inflexible(adjective, mean, strong, secure)
32
inexorable(adjective, mean, certain, determined)
32
uncompromising(adjective, mean, secure, rough)
32
unyielding(adjective, mean, strong, sound)
29
obdurate(adjective, strong, secure, flat)
29
unbending(adjective, mean, strong, flat)
29
stiff(adjective, set, secure, rough)
26
unshakable(adjective, mean, strong, complete)
23
unrelenting(adjective, mean, firm, determined)
22
obstinate(adjective, mean, rough, firm)
22
relentless(adjective, mean, firm, determined)
21
immutable(adjective, secure, rough, firm)
19
adamant(adjective, mean, strong, secure)
19
stable(adjective, adverb, calm, quiet, strong)
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APASmart Define. (2016). fixed thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/fixed/thesaurus/synonyms
ChicagoSmart Define. 2016. "fixed thesaurus" https://smartdefine.org/fixed/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, fixed thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/fixed/thesaurus/synonyms>.
MLASmart Define. "fixed thesaurus" 16 March 2016. Web. 21 September 2026. <https://smartdefine.org/fixed/thesaurus/synonyms>