<p><strong>Adjective</strong></p><ul><li>having no spines or quills.</li><li>having no spine or backbone.</li><li>having a weak spine; limp.</li><li>without moral force, resolution, or courage; feeble: a spineless, lily-livered coward.</li></ul><p><strong>Synonyms</strong></p><ul><li>indecisive, irresolute, weak</li></ul><p><strong>Antonyms</strong></p><ul><li>resolute, strong</li></ul>