Английский словарь американских идиом - get wise

{v. phr.}, {slang} To learn about something kept secret from you; become alert. * /One girl pretended to be sick on gym days when she had athletics, until the teacher got wise and made her go anyway./ - Often used with "to". * /The boys got wise to Jack's fondness for bubble gum./ * /If you don't get wise to yourself and start studying, you will fail the course./ Compare: CATCH ON, SEE THROUGH. Contrast: IN THE DARK.