malignant
adjective uk/məˈlɪɡ.nənt/ us/məˈlɪɡ.nənt/
(DISEASE)
（疾病或肿块）恶性的，致命的
A malignant disease or growth is likely to get worse and lead to death.
The process by which malignant cancer cells multiply isn't fully understood. 人们尚未完全了解恶性癌细胞的繁殖过程。
Is the tumour malignant or benign? 这个肿瘤是恶性的还是良性的？
Compare: benign (PERSON)
(EVIL)
formal恶意的;邪恶的
having a strong wish to do harm
He developed a malignant hatred for the land of his birth. 他对自己的故土产生了强烈的怨恨。