maniac

1. N-COUNT A maniac is a crazy person who is violent and dangerous. 疯子

The cabin looked as if a maniac had been let loose there. 小屋看上去像是被放任的疯子光顾过一样。

2. ADJ If you describe someone's behaviour as maniac, you are emphasizing that it is extremely foolish and uncontrolled. 疯狂的[ADJ n] [强调]

He could not maintain his maniac speed for much longer. 他不能太长时间地保持这种疯狂的速度。

3. N-COUNT If you call someone, for example, a religious maniac or a sports maniac, you are critical of them because they have such a strong interest in religion or sports. 狂热分子[表不满]

My mom is turning into a religious maniac. 我妈妈正在变成一个宗教狂热分子。