unpredictably
🇺🇸
/ˌʌnprɪˈdɪktəbli/
🇬🇧
/ˌʌnprɪˈdɪktəbli/
in a way that is hard to guess or know in advance
The weather changed unpredictably, causing delays in our travel plans.
날씨가 예측 불가능하게 변하여 여행 계획에 지연이 생겼습니다.