unsayable

/ʌnˈseɪəbəl/
adjective
  1. Impossible or too difficult to express in words.
    • The beauty of the sunset was so overwhelming it felt unsayable.
    • The horror of the accident was unsayable; no one could describe it.
    • Some emotions are so deep they remain unsayable.
Antonyms
What does "unsayable" mean? | whatsthatwordmean | whatsthatwordmean