263 entries under tough topic. ×

3
balky(adjective, firm, cross, restless)
3
compact(adjective, close, set, hard)
3
compressed(adjective, set, hard, firm)
3
condensed(adjective, hard, solid, rigid)
3
forbidding(adjective, appearance, strong, hard)
3
heavy(adjective, strong, hard, sound)
3
insensitive(adjective, hard, harsh, cold)
3
insubordinate(adjective, firm, inflexible, obstinate)
3
mean(adjective, clear, hard, severe)
3
serious(adjective, strong, hard, severe)
3
solidified(adjective, set, hard, firm)
3
tyrannical(adjective, hard, severe, harsh)
3
unbreakable(adjective, strong, hard, severe)
3
uncompassionate(adjective, mean, hard, harsh)
3
ungovernable(adjective, difficult, unpleasant, determined)
3
unmanageable(adjective, firm, unpleasant, determined)
3
unmerciful(adjective, mean, hard, severe)
3
unsparing(adjective, mean, strong, hard)
3
vigorous(adjective, strong, hard, sound)
2
bound(adjective, strong, flat, firm)
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APASmart Define. (2016). unyielding thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/unyielding/thesaurus/synonyms
ChicagoSmart Define. 2016. "unyielding thesaurus" https://smartdefine.org/unyielding/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, unyielding thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/unyielding/thesaurus/synonyms>.
MLASmart Define. "unyielding thesaurus" 10 March 2016. Web. 1 October 2026. <https://smartdefine.org/unyielding/thesaurus/synonyms>