amass
v.v. to collect a large amount of something over a long time. You use this when talking about gathering things like money, power, or information.
v. to accumulate a large quantity of something, typically over an extended period. Often implies a systematic or deliberate process of gathering.
He worked hard to amass a large collection of rare books.
The tech company spent years trying to amass enough data to improve its artificial intelligence algorithms.
While some families amass wealth through inheritance, others build their fortunes through decades of disciplined investment and strategic business decisions.
From Middle English *amassen (found only as Middle English massen (“to amass”)), from Anglo-Norman amasser, from Medieval Latin amassāre, from ad + massa (“lump, mass”). See mass.