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frustrate

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verb [transitive] American English pronunciation: frustrate /ˈfrʌˌstreɪt/ 
Word Forms
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present tense
I/you/we/theyfrustrate
he/she/itfrustrates
present participlefrustrating
past tensefrustrated
past participlefrustrated
  1. 1
    to make someone feel annoyed and impatient by preventing them from doing or getting something

    She has always been frustrated by her inability to draw.

    Activists and reformers are frustrated by the public's lack of interest.

  2. 2
    to prevent someone or something from succeeding
    frustrate someone's attempts/efforts:

    Their attitude frustrated all our efforts to introduce improvements.

    frustrate someone's plans/intentions:

    The weather continues to frustrate the builders' plans.

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