胆小鬼用英文怎么？

胆怯鬼

[词典] coward; craven; poltroon; scaramouch; caitiff;

[例句]他进攻我，进攻我的老婆，那正证明他本身是个没前程的胆怯鬼。

By attacking me, by attacking my wife, he has proved himself to be a gutless coward.