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Adjective virulent has 3 senses
- deadly, venomous, virulent - extremely poisonous or injurious; producing venom; "venomous snakes"; "a virulent insect bite"
Antonyms: nontoxic, atoxic (indirect, via toxic)
- virulent - infectious; having the ability to cause disease
Antonym: avirulent
- acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, venomous, virulent, vitriolic - harsh or corrosive in tone; "an acerbic tone piercing otherwise flowery prose"; "a barrage of acid comments"; "her acrid remarks make her many enemies"; "bitter words"; "blistering criticism"; "caustic jokes about political assassination, talk-show hosts and medical ethics"; "a sulfurous denunciation"
Antonym: pleasant (indirect, via unpleasant)
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