85 entries under mean topic. ×

10
stern(adjective, person, appearance, hard)
9
dog-eat-dog(adjective, hard, harsh, cruel)
8
cold(adjective, hard, tough, severe)
8
unsparing(adjective, severe, rough, difficult)
7
malicious(adjective, evil, nasty, harsh)
7
mortal(adjective, harsh, cruel, determined)
7
uncharitable(adjective, unkind, ungenerous)
6
feral(adjective, harsh, violent, cruel)
6
indifferent(adjective, hard, harsh, cold)
6
vengeful(adjective, severe, evil, nasty)
5
adamant(adjective, person, hard, rough)
5
compassionless(adjective, hard, cruel, unfeeling)
5
uncaring(adjective, person, hard, tough)
4
coldhearted(adjective, hard, severe, harsh)
4
nasty(adjective, evil, cruel, negative)
4
unappeasable(adjective, harsh, cruel, determined)
4
uncalled-for(adjective, cruel, senseless, pitiless)
4
unsympathizing(adjective, unkind, coldhearted)
3
gratuitous(adjective, cruel, senseless, pitiless)
3
sadistic(adjective, evil, nasty, harsh)
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APASmart Define. (2016). merciless thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/merciless/thesaurus/synonyms
ChicagoSmart Define. 2016. "merciless thesaurus" https://smartdefine.org/merciless/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, merciless thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/merciless/thesaurus/synonyms>.
MLASmart Define. "merciless thesaurus" 31 March 2016. Web. 29 September 2026. <https://smartdefine.org/merciless/thesaurus/synonyms>