inexplicable
🇺🇸
/ˌɪnɪkˈsplɪkəbl/
🇬🇧
/ˌɪnɪkˈsplɪkəbl/
cannot be explained or understood
His sudden decision to leave was completely inexplicable to everyone.
그가 갑자기 떠나기로 한 결정은 모두에게 전혀 설명할 수 없었다.