The ability to understand and decide things quickly and well (Oxford)
Skill in making correct decisions and judgments in a particular subject, such as business or politics (Cambridge)
He had demonstrated considerable business acumen. (Oxford)
She has an acumen for handling finances that far exceeds what one typically finds in our industry. (Oxford)
demonstrated considerable business acumen
has an acumen for handling finances
Intelligence
Cleverness
Insensitivity
Stupidity
Acumenics