85 entries under adjective topic. ×

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pernicious
0
pestilential
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rancorous(mean, harsh, cruel, vicious)
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relentless(mean, harsh, cruel, vicious)
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revengeful(mean, harsh, cruel, vicious)
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rival(spirited, aggressive, ambitious, competing)
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sadistic(mean, harsh, cruel, vicious)
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spirited
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streetwise(spirited, aggressive, ambitious, competing)
0
unappeasable(mean, severe, harsh, cruel)
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unfeeling(mean, harsh, cruel, vicious)
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unforgiving(mean, harsh, cruel, vicious)
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unrelenting(mean, harsh, cruel, vicious)
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unsympathetic(mean, harsh, cruel, vicious)
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unyielding(mean, harsh, cruel, vicious)
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vicious(mean, harsh, cruel, brutal)
0
vindictive(mean, harsh, cruel, vicious)
0
vying(spirited, aggressive, ambitious, competing)
-1
ambitious(spirited, aggressive, competing, bloodthirsty)
-1
killer instinct(expression, spirited, aggressive, ambitious)
10 years ago|24k views|share |citing 
APASmart Define. (2016). killer thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/killer/thesaurus/synonyms
ChicagoSmart Define. 2016. "killer thesaurus" https://smartdefine.org/killer/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, killer thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/killer/thesaurus/synonyms>.
MLASmart Define. "killer thesaurus" 30 March 2016. Web. 24 September 2026. <https://smartdefine.org/killer/thesaurus/synonyms>