<p><strong>Verb (used without object):</strong></p><ul><li>to diminish or lessen in extent, quantity, strength, power, etc.</li></ul><p><strong>Verb (used with object):</strong></p><ul><li>to make less; cause to diminish.</li><li>to decrease one's workload.</li></ul><p><strong>Noun:</strong></p><ul><li>the act or process of decreasing; condition of being decreased; gradual reduction.</li><li>the amount by which a thing is lessened.</li></ul>