4
in cold blood(adverb, cruel, fiercely, violently, cruelly)
4
unfeelingly(adverb, ruthlessly, mercilessly)
4
unrelentingly(adverb, fiercely, violently, cruelly, viciously)
4
unsympathetically(adverb, ruthlessly, mercilessly)
3
atrociously(adverb, fiercely, violently, cruelly, viciously)
3
barbarically(adverb, fiercely, violently, cruelly, viciously)
3
harshly
3
unchristianly(adverb, cruel, in awful way, evil way)
3
vengefully(adverb, cruel, in awful way, evil way)
2
barbarously(adverb, fiercely, violently, cruelly, viciously)
2
brutishly(adverb, fiercely, violently, cruelly, viciously)
2
demoniacally(adverb, fiercely, violently, cruelly, viciously)
2
diabolically(adverb, fiercely, violently, cruelly, viciously)
2
ferally(adverb, fiercely, violently, cruelly, viciously)
2
fiercely(adverb, violently, cruelly, viciously, persistently)
2
roughly
2
something fierce(adverb, fiercely, violently, cruelly, viciously)
2
stonily
2
unpityingly
2
without remorse(adverb, fiercely, violently, cruelly, viciously)
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APASmart Define. (2016). pitilessly thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/pitilessly/thesaurus/synonyms
ChicagoSmart Define. 2016. "pitilessly thesaurus" https://smartdefine.org/pitilessly/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, pitilessly thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/pitilessly/thesaurus/synonyms>.
MLASmart Define. "pitilessly thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/pitilessly/thesaurus/synonyms>