<p><strong>Verb (used with object):</strong></p><ul><li>to gather or collect, often in gradual degrees; heap up: to accumulate wealth.</li></ul><p><strong>Verb (used without object):</strong></p><ul><li>to gather into a heap, mass, cover, etc.; form a steadily increasing quantity: Snow accumulated in the driveway. His debts kept on accumulating.</li></ul>