1. wary, careful, shrewd
2. uncommunicative; unwilling or hesitant to give information.

…In classic Clintonian fashion, her camp refused to confirm the authenticity of the emails, while also not denying them either. But why not just own the e-mails? Why all the cagey non-denial denials? … The “scandal” of the Wiki papers, if you can call it that, is that it captured how at ease Clinton was talking to bankers and industrialists about the options for the organization of a global society.

From the post: Win or lose, Donald Trump has forever changed the American political system
Source: The Fury and Failure of Donald Trump (