weaken
US /ˈwiː.kən/
UK /ˈwiː.kən/
1.
弱める, 弱まる
make or become weaker in power, resolve, or physical strength
:
•
The illness had weakened him considerably.
病気は彼をかなり弱らせた。
•
The bridge was weakened by the constant heavy traffic.
橋は絶え間ない交通量によって弱められた。