indescribable
adj. B2 Upper Intermediate US //ˌɪndɪsˈkɹaɪbəbəɫ// UK //ˌɪndɪskɹˈaɪbəbəl// in·de·scrib·able
adj. too great or strange to be described in words. You use this when something is so amazing or shocking that you cannot find the right words to explain it.
adj. impossible to describe in words; so great or extreme that it exceeds the capacity of language to capture its nature.
The view from the top of the mountain was indescribable.
The feeling of standing on the edge of the Grand Canyon was truly indescribable, as the scale of the landscape overwhelmed the senses.
The experience of the first flight into space was described by the astronauts as an indescribable moment of profound connection with the planet and the universe.
From in- + describe + -able.