futile

producing no result or effect; unproductive of success

I thought I could repair the car myself, but after two days of work with no success, I have to admit that my efforts were futile.

Instead, almost a year has been wasted in futile attempts to appease the Republicans and the Mass. disaster has struck.

TEHRAN (Reuters) - The wife of Iranian opposition leader Mirhossein Mousavi says her 62-year-old brother was among those detained after last month's disputed election in what she called a futile attempt to ...

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