go astray

verb5

1. •
   To become lost or mislaid.
2. •
   To develop bad habits; to behave improperly or illegally.

   • If you keep hanging out with that gang you'll go astray.
3. •
   To behave in an adulterous manner.

   • The woman thought her husband had gone astray.
4. •
   To be undesirable or unhelpful.

   • A pinch of salt in this dish wouldn't go astray.
5. •
   To come to believe an untruth.