wise to someone/something

wise to (someone or something)

Fully aware of or alert to someone or something, especially if they or it seems suspicious, illegal, or malicious in nature or intention. We'd better watch our step—I think the police are wise to us! I hope my brother doesn't get wise to my scheme to take over the company.
See also: wise
Farlex Dictionary of Idioms.

wise to someone/something

mod. having found out about someone or something. (Underworld.) The cops are wise to the plan.
See also: someone, something, wise
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • be wise to (someone or something)
  • be/get wise to somebody/something
  • get wise to (someone or something)
  • spooked
  • speak ill of
  • speak ill of (someone or something)
  • speak/think ill of somebody
  • throw dirt enough, and some will stick
  • throw enough dirt, and some will stick
  • throw mud enough, and some will stick