amass
verbUK /əˈmæs/
US /əˈmæs/
To collect or gather a lot of something over time.
The squirrel amassed a big pile of nuts for the winter.
OTHER MEANINGS
2. To bring people or things together into a group.
The coach amassed a strong team of players.
3. To increase in amount or size by adding more and more.
She amassed a large collection of stamps over the years.
4. To build up wealth or possessions in large amounts.
The businessman amassed a fortune through hard work.