pluckless

adj.无勇气的,没精神的

缺乏勇气或决心的，没有毅力的

形容词

1. He tried to start his own business, but his pluckless attitude led to failure.
他试图创办自己的生意，但他缺乏勇气的态度导致了失败。

2. Without determination, he remained pluckless in the face of adversity.
在逆境面前，他毫无决心，失去了斗志。