/frʌ'streɪt; [US] 'frʌstreɪt; `frʌstret/
v [Tn]
1 (a) prevent (sb) from doing or achieving sth 阻止（某人）做成某事; 妨碍
*He had hoped to set a new world record, but was frustrated by bad weather. 他本希望能创造新的世界纪录, 但因天气恶劣而未果.
(b) make (efforts, etc) useless; defeat 使（努力等）无效; 失败
*Bad weather has frustrated plans to launch the spacecraft today. 今日发射宇宙飞船的计画, 因天气恶劣而落空.
2 upset or discourage (sb) 扰乱或阻挠（某人）; 使沮丧; 使灰心
*Mary was frustrated by the lack of appreciation shown of her work. 玛丽因工作得不到赏识而灰心丧气.

v [T]
[Date: 1400-1500; Language: Latin;Origin: frustrare, from frustra 'without effect']
if something frustrates you, it makes you feel annoyed or angry because you are unable to do what you want
　The fact that he's working with amateurs really frustrates him.
[usually passive]
to prevent someone's plans, efforts, or attempts from succeeding
　Their attempts to speak to him were frustrated by the guards.