2
spiteful(adjective, nasty, unkind, malicious, merciless)
2
stonyhearted
2
thoughtless
2
unappeasable(adjective, mean, severe, harsh, cruel)
2
uncivilised
2
unemotional(adjective, hard, tough, severe, cold)
2
unfriendly(adjective, unfeeling, unsympathetic, hardhearted)
2
ungracious(adjective, hard, severe, sharp, nasty)
2
unprincipled(adjective, vicious, savage, ruthless)
2
unresponsive(adjective, unfeeling, unsympathetic, uncaring, insensitive)
2
unsentimental
1
abominable
1
adamantine
1
affectless
1
aloof
1
anesthetized(adjective, hard, tough, severe, cold)
1
asleep(adjective, hard, tough, severe, cold)
1
astringent(adjective, close, hard, severe, harsh)
1
autocratic
1
avaricious(adjective, hard, tough, harsh, cruel)
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APASmart Define. (2016). pitiless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/pitiless/thesaurus/synonyms
ChicagoSmart Define. 2016. "pitiless thesaurus" https://smartdefine.org/pitiless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, pitiless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/pitiless/thesaurus/synonyms>.
MLASmart Define. "pitiless thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/pitiless/thesaurus/synonyms>