infestation
🇺🇸
/ˌɪnfeˈsteɪʃn/
🇬🇧
/ˌɪnfeˈsteɪʃn/
When there are a lot of unwanted creatures, like bugs or rats, living somewhere and causing problems.
The house had an infestation of mice, which was a big problem.
집에 쥐의 침입이 있었고, 큰 문제였습니다.