Something I Don't Understand, It's All __

This page is the CodyCross answer for the clue below from Underground Worlds, Group 2180, Puzzle 1 (Cappadocia Homes).

Question is: Something I Don't Understand, It's All __

and the answer is: GREEKTOME

Word Meaning:

GREEK — Alternative letter-case form of Greek (“nonsense writing or talk; gibberish”).

Definitions from Wiktionary.