virulent

adj. infectious, causing infection; poisonous; hateful; obnoxious

For the album by Only Crime, see Virulence (album) Virulence refers to the degree of pathogenicity of a microbe, or in other words the relative ability of a microbe to cause disease. The word virulent, which is the adjective for virulence, derives from the Latin word virulentus, which means "full of poison." From an ecological point of view, virulence can be defined as the host's parasite induced loss of fitness.
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Adjective
1. extremely poisonous or injurious; producing venom; "venomous snakes"; "a virulent insect bite"
(synonym) deadly, venomous
(similar) toxic
2. infectious; having the ability to cause disease
(antonym) avirulent
(similar) deadly
3. 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"
(synonym) acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, venomous, vitriolic
(similar) unpleasant

adj. virulent, infectious, causing infection

adj. virulent, vicious, fierce, scurrilous