1. (adj) deadly, venomous, virulent
extremely poisonous or injurious; producing venom
Synonyms: virulent, blistering, pestilent, mortal(a), pernicious, sulfurous, mortal, baneful, acerbic, venomous, sulphurous, caustic, deathly, lethal, acrid, poisonous, vicious, deadly, acid, vitriolic, bitter, acerb
Antonyms: atoxic, avirulent, nontoxic, pleasant
2. (adj) virulent
infectious; having the ability to cause disease
Synonyms: acrid, blistering, acid, sulphurous, caustic, venomous, bitter, deadly, acerbic, vitriolic, acerb, sulfurous
Antonyms: nontoxic, pleasant, avirulent, atoxic
3. (adj) acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, virulent, vitriolic
harsh or corrosive in tone
Synonyms: virulent, blistering, red-hot, vitriolic, hot, blistery, acerbic, stifling, sulphurous, acidic, acrimonious, caustic, mordant, acidulous, venomous, astringent, sulfurous, acrid, deadly, acid, corrosive, pungent, biting, bitter, sultry, acidulent, acerb, erosive
Antonyms: atoxic, nontoxic, pleasant, avirulent
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Synonyms and Antonyms of virulent 
