wild-eyed       
adjective uk/ˈwaɪldˌaɪd/ us/ˈwaɪldˌaɪd/
 目瞪口呆
having an expression in the eyes of fear, anger, panic (= fear that prevents reasonable thought and action), or insanity (= serious mental illness)
  His specialty seemed to be playing wild-eyed, deranged characters. 他的专长似乎是扮演惊慌失措、精神错乱的角色。 
 Blood was trickling down the horse's neck and he helped lead the wild-eyed animal back to the stables. 鲜血从马的脖子上流下来,他帮助把这匹惊恐万状的马带回了马厩。 
 - More examples
- He stood in the doorway, unshaven, unwashed and wild-eyed, his condition startling the messenger.
- As lightning crackles around an international flight to Boston, a wild-eyed passenger injects himself with something one can only hope is a tranquilizer.
- Wild-eyed, the animals smashed against the steel bars.