1
execrable
1
extirpative(adjective, harmful, injurious, damaging, deadly)
1
fell(adjective, harmful, injurious, damaging, deadly)
1
flinty(adjective, evil, nasty, harsh, vicious)
1
full of mischief(expression, idiom, inexpedience)
1
generate
1
hard(adjective, evil, nasty, harsh, vicious)
1
hard-hearted(adjective, evil, nasty, harsh, vicious)
1
harm
1
hellish(adjective, evil, nasty, harsh, vicious)
1
hideous
1
horrible
1
horrid
1
hostile(adjective, nasty, negative, vicious, wicked)
1
hurtfulness
1
ill-boding(adjective, negative emotions)
1
immoral
1
implacable(adjective, evil, nasty, harsh, vicious)
1
in poor condition(adjective, arouse bad feelings)
1
incendiary(injurious, damaging, destructive)
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APASmart Define. (2016). pernicious thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/pernicious/thesaurus/synonyms
ChicagoSmart Define. 2016. "pernicious thesaurus" https://smartdefine.org/pernicious/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, pernicious thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/pernicious/thesaurus/synonyms>.
MLASmart Define. "pernicious thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/pernicious/thesaurus/synonyms>