89 entries under strong topic. ×

67
relentless(adjective, appearance, mean, hard)
64
inflexible(adjective, mean, hard, tough)
64
stubborn(adjective, characteristic, appearance, quality, mean)
63
rigid(adjective, mean, hard, tough)
62
unrelenting(adjective, appearance, mean, hard)
62
unyielding(adjective, appearance, mean, hard)
57
obdurate(adjective, mean, hard, tough)
50
determined(adjective, hard, tough, harsh)
50
unbending(adjective, mean, hard, tough)
47
firm(adjective, mean, hard, tough)
38
immovable(adjective, mean, hard, tough)
33
adamant(adjective, mean, hard, tough)
32
adamantine(adjective, hard, tough, resist)
26
implacable(adjective, appearance, mean, hard)
22
grim(adjective, appearance, mean, hard)
19
hard(adjective, mean, tough, severe)
19
severe(adjective, appearance, mean, hard)
17
cruel(adjective, appearance, mean, hard)
16
iron(adjective, mean, hard, tough)
14
hard-nosed(adjective, mean, hard, tough)
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APASmart Define. (2015). inexorable thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/inexorable/thesaurus/synonyms
ChicagoSmart Define. 2015. "inexorable thesaurus" https://smartdefine.org/inexorable/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, inexorable thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/inexorable/thesaurus/synonyms>.
MLASmart Define. "inexorable thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/inexorable/thesaurus/synonyms>