doubly
adv.to a much greater degree than usual, or in two different ways. You use it when you want to emphasize that something is twice as important or serious.
adv.to twice the degree or extent; in a twofold manner. Often used to intensify an adjective when two distinct reasons for that quality exist.
“The new rules make the job doubly difficult.”
“Losing the final was doubly painful because it was their last game together as a team.”
“The architect's design was doubly impressive, succeeding both as a functional public space and as a striking piece of modern art.”
Typically placed before the adjective or adverb it modifies.
“But the “Paul is dead” theory was doubly daft since McCartney was the picture’s creative author along with Macmillan.”
From Middle English dowbly, doubli, dubli, doubeliche, equivalent to double + -ly.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.