An adjective "savvy" means having or showing experience and knowledge that helps you understand things quickly.
You might hear someone describe themselves as "savvy investors" meaning they have a lot of experience with money and know how to make smart financial decisions. Or, if someone says a friend is "savvy about cars," it means the friend knows a lot about mechanics and can fix problems easily.
Shrewdness.
To understand.
Shrewd, well-informed and perceptive.
