<p><strong>Adjective</strong></p><ul><li>apt to snap or bite; snappish, as a dog.</li><li>impatient or irritable, as a person or a reply.</li><li>snapping or crackling in sound, as a fire.</li><li>quick or sudden in action or performance.</li><li>Informal: crisp, smart, lively, brisk, etc.: Only snappy people get ahead in this world.</li></ul>