verb

1. To heap up in a mass; to pile up; to collect or bring together (either literally or figuratively)

   “He wishes to accumulate a sum of money.”

2. To grow or increase in quantity or number; to increase greatly.

3. To take a higher degree at the same time with a lower degree, or at a shorter interval than usual.

Synonyms: aggregate, amound, collect, gather, amass, heap, hoard, store

adjective

1. Collected; accumulated.