frustrate: Meaning and Definition of

frus•trate

1. to make (plans, efforts, etc.) worthless or of no avail; defeat; nullify: The student's indifference frustrated the teacher's efforts to help him.
2. to disappoint or thwart (a person): a talented woman whom life had frustrated.

1. to become frustrated: His trouble is that he frustrates much too easily.

1. frustrated.