46 entries under tough topic. ×

1
uncompassionate(adjective, mean, hard, harsh)
1
unimpressible(adjective, mean, hard, harsh)
1
unpliable(difficult, wild, awkward, obstinate)
1
unrelenting(adjective, mean, hard, harsh)
1
unshakable(adjective, mean, hard, harsh)
1
unsympathetic(adjective, mean, hard, harsh)
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APASmart Define. (2015). uncooperative thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/uncooperative/thesaurus/synonyms
ChicagoSmart Define. 2015. "uncooperative thesaurus" https://smartdefine.org/uncooperative/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, uncooperative thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/uncooperative/thesaurus/synonyms>.
MLASmart Define. "uncooperative thesaurus" 10 April 2015. Web. 1 October 2026. <https://smartdefine.org/uncooperative/thesaurus/synonyms>