13
malevolent(adjective, mean, evil, nasty, harsh)
13
nasty(adjective, mean, severe, wicked, hostile)
12
acrid
12
antagonistic(adjective, mean, severe, nasty, hostile)
12
baneful(adjective, help, unhealthy, harmful, deadly)
12
harmful(adjective, unhealthy, injurious, hurtful, noxious)
12
hateful(adjective, mean, severe, evil, nasty)
12
rancorous(adjective, mean, love, severe, evil)
12
sharp(adjective, hostile, bitter, discourtesy, hurtful)
12
vitriolic(adjective, mean, severe, nasty, intelligent)
11
malign(adjective, mean, bad, evil, nasty)
11
noxious(adjective, help, mean, bad, evil)
11
sarcastic(adjective, discourtesy)
11
trenchant(adjective, discourtesy)
10
cruel(adjective, mean, nasty, pain, violent)
10
destructive(adjective, unhealthy, rotten, inexpedience, noxious)
10
hostile(adjective, mean, severe, nasty, unfriendly)
9
acerb
8
baleful(adjective, mean, bad, evil, nasty)
8
corrosive(adjective, bitter, malevolent, inexpedience, consuming)
11 years ago|14k views|share |citing 
APASmart Define. (2015). virulent thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/virulent/thesaurus/synonyms
ChicagoSmart Define. 2015. "virulent thesaurus" https://smartdefine.org/virulent/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, virulent thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/virulent/thesaurus/synonyms>.
MLASmart Define. "virulent thesaurus" 3 August 2015. Web. 23 September 2026. <https://smartdefine.org/virulent/thesaurus/synonyms>