Correct

阴毒

/ yīndú / 
Strokes

Definition

sinister/insidious

Example

As an Adjective

insidious; sinister and ruthless

1
Yīndú
阴毒
de
的
dírén
敌人

insidious enemy

2
Shēngxìng
生性
yīndú
阴毒

be sinister and ruthless in nature