repercussion
US /ˌriː.pɚˈkʌʃ.ən/
UK /ˌriː.pɚˈkʌʃ.ən/

1.
répercussion, conséquence, retentissement
an unintended consequence of an event or action, especially an unwelcome one
:
•
His resignation had serious repercussions for the company.
Sa démission a eu de graves répercussions pour l'entreprise.
•
The new policy will have far-reaching repercussions.
La nouvelle politique aura des répercussions de grande portée.