Words for "amazing" can be long or short depending on the language. For example:
* English: "Astonishing" (11 letters), "extraordinary" (13 letters)
* French: "Étonnant" (8 letters)
* Spanish: "Asombroso" (9 letters)
* German: "Erstaunlich" (11 letters)
You can find many other words that convey the meaning of "amazing" in different languages, with varying lengths.
If you're looking for a word that means something similar to "amazing" but is very long, you could consider:
* "Ineffable" (10 letters) - too great or extreme to be expressed or described in words.
* "Unbelievable" (12 letters) - impossible to believe.
Ultimately, the "longest word" for "amazing" depends on your specific context and the language you're using.