inexcusably
🇺🇸
/ˌɪnɪkˈskjuːzəbli/
🇬🇧
/ˌɪnɪkˈskjuːzəbli/
in a way that is very wrong and cannot be forgiven
It was inexcusably rude to arrive late without calling.
在沒有打電話的情況下遲到是不可原諒的粗魯。