vt.

1. 挫敗；阻撓；使感到灰心
   They made their preparations to frustrate the conspiracy.

   他們作好準備挫敗以這個陰謀。

   He was frustrated by repeated failures.

   他因一再失敗而灰心喪氣。

2. 使無效

a.

1. 受挫的；失望的
2. 無益的，無效的
   The prisoner made a frustrate attempt to escape.

   囚犯妄圖逃跑。

v.

1. prevent (a plan or action) from progressing, succeeding, or being fulfilled.
   ▸prevent (someone) from doing or achieving something.
2. cause (someone) to feel dissatisfied or unfulfilled.

adj.