not able to be punished, criticized, or changed in any way
He believed the police would never arrest him, that he was untouchable.他相信警察不可能逮捕他，他是碰不得的。
(NOT DEFEATED)
无法击败的；无法企及的
not able to be defeated or to be as good as something else
Coventry City have proved untouchable this season - they've just won their sixth consecutive game.本赛季考文垂城队已经证明是无法击败的——他们刚刚取得了6连胜。
untouchable
noun[ C ]old-fashioned offensive(also Untouchable)uk/ʌnˈtʌtʃ.ə.bəl/us/ʌnˈtʌtʃ.ə.bəl/
（印度社会的）贱民，不可接触者
a word used in the past for a person, particularly a person from India, who belonged to the caste (= social group ) that was considered the lowest. This word is now considered offensive.