untouchable - definition and synonyms

adjective 

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/ʌnˈtʌtʃəb(ə)l/
  1. 1
    too powerful to be punished or controlled

    For many years, the institution was an untouchable force in politics.

  2. 2
    much better at something than similar people or things

    His batting record may prove untouchable.

     Synonyms and related words