What does "frustrate" mean?

Frustrate: To bring to nothing; to prevent from attaining a purpose; to disappoint; to defeat; to baffle; as, to frustrate a plan, design, or attempt; to frustrate the will or purpose. Shall the adversary thus obtain His end and frustrate thine Milton.

Additional senses

  1. 2.To make null; to nullifly; to render invalid or of no effect; as, to frustrate a conveyance or deed.

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