deafen
🇺🇸
/ˈdefn/
🇬🇧
/ˈdefn/
to make someone unable to hear, either for a short time or permanently
The loud music at the concert was so loud that it almost deafened her.
コンサートで騒音が大きすぎて、彼女をほぼ耳を聞かなくしてしまった。