fruitless

Bearing no fruit; barren.

• [S]he [Rachel Carson] also warned of falls in which "there was no pollination and there would be no fruit." […] The entomologist Stephen L. Buchmann and the crop ecologist Gary Paul Nabhan amplified Carson's warning in their 1996 book, The

Unproductive, useless.figuratively

• The unskilled man’s attempt at fixing his car engine was fruitless.

Of a person: unable to have children; barren, infertile.archaicfiguratively

• The fruitless woman desperately wanted to have children.

Of a diet, etc.: without fruit.rare

• 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.