出典:Wiktionary
We only know the letters mn of the last word in the name, as the Egyptians only wrote down consonants and no vowels in their writing system, so various people fill in various vowels.
Borrowed from Egyptian (twt-ꜥnḫ-jmn, literally “Living Image of Amun”). Like most Ancient Egyptian names, the original is a phrase rather than a single word.
Tutankhamon