learn (one's) lesson

learn (one's) lesson

To learn through painful experience not to do something, often something one had been warned about or knew might be risky. I told you that you'd feel awful if you drank that much wine. I hope you've learned your lesson. I certainly learned my lesson about buying something from a stranger online.
See also: learn, lesson
Farlex Dictionary of Idioms.

learn one's lesson

Profit from experience, especially an unhappy one. For example, From now on she'd read the instructions first; she'd learned her lesson. Also see hard way.
See also: learn, lesson
The American Heritage® Dictionary of Idioms by Christine Ammer.

learn your ˈlesson

learn what to do or what not to do in the future because you have had a bad experience in the past: I used to carry a lot of money on me, until one day my bag was stolen. Since then, I’ve learned my lesson.
See also: learn, lesson
Farlex Partner Idioms Dictionary
See also:
  • a/the feel of (something)
  • (I) wouldn't (do something) if I were you
  • (one) could use (something)
  • (one) never would have guessed
  • (you've) got to get up pretty early in the morning to (do something)
  • all right
  • a straw will show which way the wind blows
  • a crack at (someone or something)
  • (one's) heart is set on (something)
  • (one) doesn't give a rip (about something)