virulent
I
adjective
acerbus, acrid, acrimonious, antagonistic, baleful, baneful, bitter, deadly, deleterious, despiteful, destructive, envenomed, gravis, harmful, hateful, hostile, hurtful, injurious, lethal, malevolent, malicious, malign, malignant, mordacious, noxious, pernicious, poison, poisonous, rancorous, spiteful, toxic, treacherous, unfriendly, venomous, violent
II
index
antipathetic (distasteful), bitter (penetrating), caustic, chronic, dangerous, deleterious, fatal, harsh, insalubrious, lethal, malevolent, malicious, malignant, mordacious, noxious, peccant (unhealthy), pernicious, pestilent, ruthless, scathing, sinister, spiteful, toxic, vicious
Burton's Legal Thesaurus.
William C. Burton.
2006