salutary

adjective /ˈsæljəteri/
  1. (of an experience) having a good effect on sb/sth, though often seeming unpleasant
    • a salutary lesson/experience/warning
    • The accident was a salutary reminder of the dangers of climbing.
    • This would have a salutary effect upon the health of the family.
Origin: late Middle English (as a noun in the sense ‘remedy’): from French salutaire or Latin salutaris, from salus, salut- ‘health’.

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