unutterable
🇺🇸
/ʌnˈʌtərəbl/
🇬🇧
/ʌnˈʌtərəbl/
so extreme that it cannot be expressed in words
The beauty of the sunset was unutterable, leaving everyone in awe.
夕日の美しさは言語道断で、皆を驚嘆させた。