chastening
adjective /ˈtʃeɪsnɪŋ/
  /ˈtʃeɪsnɪŋ/
- making somebody feel sorry for something they have done- It was a chastening experience.
- She gave them a chastening lecture.
- The party suffered a chastening defeat in the elections.
- It is chastening to remember that this happened only 20 years ago.