Virulent definitions

vîr'yə-lənt, vîr'ə-
The definition of virulent is something very dangerous or harmful. It also is being especially bitter, ardent and hostile.

An example of virulent is an aggressive and deadly disease.

An example of virulent is when you rage a bitter and angry speech against a teacher you don't like.

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Extremely hostile or malicious.

Virulent criticism; a virulent bigot.

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Characterized by, causing, or promoting the rapid onset of severe illness. Used of a disease or toxin.
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Capable of causing disease by aggressively interfering with the immune system of the host. Used of a pathogen.
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Extremely poisonous or injurious; deadly.
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Bitterly antagonistic or spiteful; full of hate and enmity; venomous; rancorous.
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Violent and rapid in its course; highly malignant.
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Able to overcome the natural defenses of the host; highly infectious.
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Characterized by, causing, or promoting the rapid onset of severe illness. Used of a disease or toxin.
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Capable of causing disease by aggressively interfering with the immune system of the host. Used of a pathogen.
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(chiefly medicine, of a disease or disease-causing agent) Highly infectious, malignant, or deadly.
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Hostile to the point of being venomous; intensely acrimonious.

The politicians were virulent in their hatred of the president.

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Origin of virulent

Middle English from Latin vīrulentus from vīrus poison