Adjective

(en adjective)

(chiefly, medicine, of a disease or disease-causing agent) Highly infectious, malignant or deadly.

Hostile to the point of being venomous; intensely acrimonious.

* {{quote-book, year=1963, author=(Margery Allingham), title=(The China Governess)

, chapter=8 citation , passage=It was a casual sneer, obviously one of a long line. There was hatred behind it, but of a quiet, chronic type, nothing new or unduly virulent , and he was taken aback by the flicker of amazed incredulity that passed over the younger man's ravaged face.}}

Adjective

(en adjective)

Causing damage or harm.

Smoking tobacco can be detrimental to your health.