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WordNet-OnlineFree dictionary and thesaurus of English. Definitions, synonyms, antonyms and more...
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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 diseaseAntonym:  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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