without giving many details or facts, especially because you do not want to tell someone everything that you know

"We have our sources," Miguel replied vaguely. “我们有自己的消息来源，”米格尔含糊地回答。

I was asked a few cursory questions about my job, which I answered as vaguely as possible. 有人问了我一些关于我工作的粗略问题，我尽可能含糊地回答了。

to some degree or to a slight degree

You are probably vaguely health-conscious. 你可能大致有些健康意识。

I put the ornaments vaguely back into position. 我大致将那些装饰品放回了原位。