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Synonyms for Virulent (same or very similar meaning)

WordNet sense 1 (extremely poisonous or injurious; producing venom):

WordNet sense 2 (of or relating to or caused by a toxin or poison):

WordNet sense 3 (harsh or corrosive in tone):
acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, vitriolic, acerb, sulphurous

WordNet sense 4 (disagreeable to the senses, to the mind, or feelings ):

WordNet sense 5 ((of a disease) having a rapid course and violent effect):

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