ten·fold /ˈtɛnˌfold, ˈfold/
Ten·fold a. & adv. In tens; consisting of ten in one; ten times repeated.
The grisly Terror . . . grew tenfold
More dreadful and deform. --Milton.
adj : containing ten or ten parts [syn: denary]
adv : by ten times as much; "the population increased tenfold"