ἐν εὐφυλάκτῳ εἶναι

From LSJ

γυνὴ γὰρ οὐδὲν οἶδε πλὴν ὃ βούλεται → women know nothing except from what they want

Source

Greek > English (Woodhouse)

be on the alert, be on the qui vive, on one's guard