To gradually grow or increase in quantity or number.
To heap up in a mass; to pile up; to collect or bring together (either literally or figuratively)
Collected; accumulated.
To become larger, to increase in magnitude.
To appear or sprout.
To undergo growth; to be present (somewhere)
To develop, to mature.
To cause or allow something to become bigger, especially to cultivate plants.
To assume a condition or quality over time.