double

Used to indicate that something has increased to become over twice the original amount or size.

Used to emphasize that the increase is a minimum of two times the original amount.

To increase to twice the amount without difficulty.

To increase in a way that has the practical effect of being twice as large.

Used to specify the aspect that has doubled, e.g., 'double in size'.

Used to specify the final amount after doubling, e.g., 'double to 20%'.