65 entries under tough topic. ×

1
persevering(adjective, firm, unreasonable, grim)
1
unpliable(difficult, unpleasant, wild, awkward)
1
unreasonable(firm, grim, inflexible, obstinate)
1
unrelenting(adjective, firm, unreasonable, grim)
1
unshakable(firm, unreasonable, grim, inflexible)
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APASmart Define. (2015). recalcitrant thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/recalcitrant/thesaurus/synonyms
ChicagoSmart Define. 2015. "recalcitrant thesaurus" https://smartdefine.org/recalcitrant/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, recalcitrant thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/recalcitrant/thesaurus/synonyms>.
MLASmart Define. "recalcitrant thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/recalcitrant/thesaurus/synonyms>