The most common and most likely answer to this crossword clue is the 10 letter word OMNISCIENT
O
M
N
I
S
C
I
E
N
T
More clues leading to the result OMNISCIENT
- Seeing it all, I'm on meandering track round island
- Knowing everything, minions etc. worried
- Icon Times destroyed, describing knight being a know-it-all
- Knowing all income isn’t redistributed
- In error, since I’m not all-knowing
- Isn't income misused? God knows!
- In new form, since I’m not comprehensively educated?
Buddy explains!

The straight part
We know that "God knows!" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case god knows! = omniscient.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does OMNISCIENT mean?
OMNISCIENT noun- One who has total knowledge.
- Having total knowledge.