5
severely(adverb, harshly)
5
unappealing(adjective, coldhearted)
5
viciously(adverb, cruel, fiercely, violently, cruelly)
4
brutally(adverb, fiercely, violently, cruelly, nastily)
4
closed(adjective, coldhearted)
4
cruel(adjective, negative emotions)
4
hard-hearted(adjective, bad, cold, aloof, no feelings)
4
ill
4
inhumane(adjective, evil, negative, coldhearted)
4
insensitive(adjective, bad, cold, aloof, no feelings)
4
merciless(adjective, evil, negative, coldhearted)
4
rigourously
4
unfriendly(adjective, evil, negative, coldhearted)
3
cold-blooded(adjective, bad, cold, aloof, no feelings)
3
coldheartedly(adverb, in a bad way)
3
incompatible(adjective, coldhearted)
3
inconsiderately(adverb, in a bad way)
3
inhospitable(adjective, coldhearted)
3
insensible(adjective, bad, cold, aloof, no feelings)
3
mean(adjective, evil, negative)
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APASmart Define. (2016). unkindly thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unkindly/thesaurus/synonyms
ChicagoSmart Define. 2016. "unkindly thesaurus" https://smartdefine.org/unkindly/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, unkindly thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unkindly/thesaurus/synonyms>.
MLASmart Define. "unkindly thesaurus" 31 March 2016. Web. 20 September 2026. <https://smartdefine.org/unkindly/thesaurus/synonyms>