Redouble

v. t.	1.	To double again or repeatedly; to increase by continued or repeated additions; to augment greatly; to multiply. So they Doubly redoubled strokes upon the foe. - Shak.
v. i.	1.	To become greatly or repeatedly increased; to be multiplied; to be greatly augmented; as, the noise redoubles.

Verb	1.	redouble - double in magnitude, extent, or intensity; "The enemy redoubled their screaming on the radio"
	2.	redouble - double again; "The noise doubled and redoubled"
	3.	redouble - make twice as great or intense; "The screaming redoubled"

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