<p><strong>Adjective:</strong></p><ul><li>not providing satisfaction; unprofitable: unfruitful efforts</li><li>not producing offspring; sterile: an unfruitful marriage</li><li>not yielding good crops; infertile: unfruitful acres</li><li>not bearing fruit; fruitless; barren: an unfruitful tree</li></ul><p><strong>Synonyms:</strong></p><ul><li>unrewarding</li><li>unproductive</li><li>vain</li><li>fruitless</li></ul>