悪あく疾しつ

noun

malignant disease; virulent disease

A formal or medical term for a serious, aggressive disease, often with a poor prognosis. Not used in casual conversation.

• 彼かれは悪あく疾しつに冒おかされ、長ながくは生いきられないと診しん断だんされた。

  He was diagnosed with a malignant disease and told he would not live long.