71 entries under cruel topic. ×

8
rigorous(adjective, strong, hard, tough, harsh)
8
strict(adjective, strong, hard, tough, flat)
7
harsh(adjective, mean, strong, hard, tough)
7
remorseless(adjective, mean, tough, harsh, resist)
7
single-minded(adjective, tough, harsh, determined)
6
callous(adjective, person, mean, hard, rough)
5
merciless(adjective, person, mean, hard, rough)
5
unappeasable(adjective, mean, harsh, determined)
5
unflinching(adjective, strong, flat, firm, harsh)
5
unsympathetic(adjective, mean, hard, tough, harsh)
4
hard-hearted(adjective, mean, hard, tough, harsh)
4
unfeeling(adjective, mean, hard, tough, harsh)
3
cold(adjective, mean, harsh, indifferent)
3
pitiless(adjective, mean, harsh, determined)
3
ruthless(adjective, mean, hard, rough, harsh)
2
bound(adjective, strong, tough, flat, firm)
2
cold-blooded(adjective, person, mean, harsh, feelings)
2
dead set on(expression, adjective, idiom, strong, secure)
2
heartless(adjective, mean, hard, tough, harsh)
2
undeviating(adjective, strong, flat, harsh, certain)
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APASmart Define. (2016). adamant thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/adamant/thesaurus/synonyms
ChicagoSmart Define. 2016. "adamant thesaurus" https://smartdefine.org/adamant/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, adamant thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/adamant/thesaurus/synonyms>.
MLASmart Define. "adamant thesaurus" 23 March 2016. Web. 30 September 2026. <https://smartdefine.org/adamant/thesaurus/synonyms>