wise up to
wise up to (someone or something)
1. To become more shrewd, prudent, or aware about someone or something; to exhibit more logic or common sense about someone or something. If you don't wise up to their schemes, these con artists are going to take your company for everything it's worth. He used to really ruffle my feathers when we were younger, but I've wised up to him since then.
2. To cause someone to become more shrewd, prudent, or aware about someone or something; to compel or enable someone to exhibit more logic or common sense about someone or something. In this usage, a noun or pronoun is used between "wise" and "up." She tried wising her sister up to him, but Mary just wouldn't listen. Living on my own without a steady job for four years wised me up to some of the difficulties people in poverty face.
wise up to
Make or become aware, informed or sophisticated, as in It's time someone wised you up to Mary; she's an incorrigible flirt, or As soon as Tony wised up to what the company was doing, he quit. [Slang; early 1900s] Also see put wise.