13
brutally(adverb, fast, sprightly, severely, intensely)
12
severely(adverb, fast, sprightly, intensely, fiercely)
10
grimly(adverb, negatively, in a bad way, in awful way)
9
callously(adverb, fiercely, negatively, unkindly, viciously)
9
roughly(adverb, fast, sprightly, severely, intensely)
9
unkindly(adverb, fiercely, violently, harshly, nastily)
8
ferociously(adverb, fast, sprightly, severely, intensely)
8
fiercely(adverb, fast, sprightly, severely, seriously)
7
atrociously(adverb, badly, fiercely, viciously, pitilessly)
7
brutishly(adverb, negatively, in awful way)
7
coldheartedly(adverb, negatively, in a bad way, in awful way)
7
hardheartedly(adverb, fiercely, violently, viciously, in a bad way)
7
harshly(adverb, strictly, sternly, unkindly, nastily)
7
inhumanly(adjective, adverb, fiercely, violently, wildly)
7
mercilessly(adverb, pitilessly)
7
savagely(adverb, fast, sprightly, severely, intensely)
7
viciously(adverb, fast, sprightly, severely, intensely)
6
barbarously(adverb, in awful way)
6
bitterly(adverb, greatness, painfully)
6
heartlessly(adverb, in a bad way)
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APASmart Define. (2016). cruelly thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/cruelly/thesaurus/synonyms
ChicagoSmart Define. 2016. "cruelly thesaurus" https://smartdefine.org/cruelly/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, cruelly thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/cruelly/thesaurus/synonyms>.
MLASmart Define. "cruelly thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/cruelly/thesaurus/synonyms>