fruitless

adjective4

1. •
   Bearing no fruit; barren.
2. •
   (figurative) Unproductive, useless.

   • The unskilled man’s attempt at fixing his car engine was fruitless.
3. •
   (rare) Of a diet, etc.: without fruit.

   • The first fruits of the season were eagerly sought after, and everybody was thankful that once more dread winter with its unvarying monotony of fruitless meals was a thing of the past. — 1923
4. •
   (figurative, no longer used) Of a person: unable to have children; barren, infertile.

   • The fruitless woman desperately wanted to have children.