acumen - noun
Quickness of intellectual insight, or discernment; keenness of judgment, insight, discrimination.
Note: The older pronunciation stresses the second syllable. The modern pronunciation stresses the first syllable.
Eugene Meyer's enlightened editorial policies and his business acumen began to turn the Washington Post around. In the first ten years after he took over, circulation tripled to 162,000 and advertising soared from 4 million to 12 million lines. However, The Post continued to lose money.
—”History & Leadership” The Washington Post Company Washpostco.com