unchallengeable
🇺🇸
/ʌnˈtʃælɪndʒəbl/
🇬🇧
/ʌnˈtʃælɪndʒəbl/
Something that is beyond doubt or cannot be disputed.
The expert's testimony was unchallengeable, leaving no room for doubt.
전문가의 증언은 이론이 될 수 없으며 의심의 여지가 없었습니다.