in a way is very generous with money, time, energy, etc., especially when this is unwise

How much money have I prodigally spent in vain amusements? 我在无聊的娱乐上浪费了多少钱？

in a way that is great in amount or degree

It is a handsomely produced and prodigally illustrated book. 这是一本制作精良、插图丰富的书。

The artist is prodigally inventive. 艺术家具有丰富的创造力。