形容词

1. (肿瘤或疾病)恶性的
A malignant tumour or disease is out of control and likely to cause death.

2. （人）恶意的，恶毒的
If you say that someone is malignant, you think they are cruel and like to cause harm.

1. dangerous to health
characterized by progressive and uncontrolled growth (especially of a tumor)