Hi,
My English failed me again. Sorry. I wanted to rephrase "It would be twice as bad" as "you would get two bads" or something natural that has the same meaning.
Another example,
Don't invest in the stock. Not only will you lose your reputation, you will lose all your savings.
That'll be a double setback??<<< this is OK.
( Something that's the opposite of one stone kills two birds)
As a slang expression, that would be a double whammy.
Clive