indescribably
🇺🇸
/ˌɪndɪˈskraɪbəbli/
🇬🇧
/ˌɪndɪˈskraɪbəbli/
so extreme or unusual that it's hard to describe
The beauty of the sunset was indescribably magnificent.
日落的美丽难以形容地壮观。