<p><strong>Adjective</strong></p><ul><li>unable to produce an effect: a disease against which modern medicine is virtually powerless.</li><li>Synonyms: ineffective</li><li>lacking power</li><li>pow power to act; helpless: His legs crumpled, and he was powerless to rise.</li><li>Synonyms: infirm, prostrate, impotent, feeble</li></ul>