weaken
US /ˈwiː.kən/
UK /ˈwiː.kən/

1.
affaiblir
make or become weaker in power, resolve, or physical strength
:
•
The illness had weakened him considerably.
La maladie l'avait considérablement affaibli.
•
The bridge was weakened by the constant heavy traffic.
Le pont a été affaibli par le trafic intense constant.