1 to cause a person to feel annoyed or impatient because he/she cannot do or achieve what he/she wants 使恼怒；使不耐烦；使沮丧: It's the lack of money that really frustrates him. 最令他烦恼的莫过于缺乏资金。

2 (formal 正式) to prevent sb from doing sth or sth from happening 阻挠；妨碍: The rescue work has been frustrated by bad weather conditions. 天气恶劣，救援工作受阻。 ➔frustrated adj He felt very frustrated at his lack of progress in learning Chinese. 他的汉语学来学去也不见进步，令他很丧气。 ➔frustrating adj