In his last State of the Union address, Obama set the goal of doubling exports by 2014.
Interest costs alone will rise $1 trillion (5% of $20 trillion6 ) – doubling already unsustainable deficits!
If you look at it as a percentage of the tax rate, then the first increase is much larger: it is doubling your taxes!
late 13c., "make double," from Old French dobler, from Latin duplare, from duplus (see double (adj.)). Meaning "to work as, in addition to one's regular job" is c.1920, circus slang, from performers who also played in the band. Related: Doubled; doubling. To double up bodily is from 1814.
A blow on the stomach "doubles up" the boxer, and occasions that gasping and crowing which sufficiently indicate the cause of the injury .... [Donald Walker, "Defensive Exercises," 1840]
mid-14c., "amount twice as great," also "duplicate copy," from double (adj.).