massing

clouds were massing overhead, threatening rain.

troops were massing at the border, a clear sign of aggression.

a large crowd was massing outside the stadium before the concert.

the protesters were massing in the city square to voice their concerns.

darkness was massing in the valley as night approached.

the company is massing resources to launch a new product.

a storm was massing on the horizon, bringing strong winds.

the orchestra was massing for a powerful rendition of beethoven’s fifth.

data was massing on the server, requiring immediate attention.

the team is massing its efforts to meet the deadline.

a formidable force was massing against them on the battlefield.