The most common and most likely answer to this crossword clue is the 9 letter word INVIOLATE
I've seen this crossword clue in Independent
I
N
V
I
O
L
A
T
E
More clues leading to the result INVIOLATE
- Seek to keep old US city unspoiled
- Untouched as plant in midwinter?
- Free from injury, one girl landing in slack net
- Fashionable area enveloped by evil -- to criminal that's pure
- One in love at dances having preserved honour
- Popular string instrument at sea oddly dropped — undamaged
- Safe to live in a resort
- Indian musical instrument's note is pure
- Popular musical instrument, extremely tactile, but untouched?
Buddy explains!

The straight part
We know that "Untouched" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case untouched = inviolate.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 INVIOLATE mean?
INVIOLATE adjective- Not violated; free from violation or hurt of any kind; secure against violation or impairment.
- Incorruptible.