a.

1. 虔誠的，篤信的；敬神的
   Her mother was a pious Christian.

   她母親是一個虔誠的基督教徒。

2. 【貶】假虔誠的，虛偽的
3. 可嘉的；好心的
4. 不可能實現的[B]
   Congress had done no more than set out some pious hopes.

   國會除了提出一些不可能實現的希望之外別無所為。

adj.

1. devoutly religious.
2. making a hypocritical display of virtue.
3. (of a hope) sincere but unlikely to be fulfilled.