unexpectedly
🇺🇸
/ˌʌnɪkˈspektɪdli/
🇬🇧
/ˌʌnɪkˈspektɪdli/
in a surprising way that you did not think would happen
The weather changed unexpectedly, so we had to cancel our picnic.
날씨가 예상치 못하게 변해서 우리는 소풍을 취소해야 했다.