One stringed instrument in ten possibly undamaged (9)
I believe the answer is:
inviolate
'undamaged' is the definition.
(I've seen this before)
'one stringed instrument in ten possibly' is the wordplay.
'one' becomes 'i' (Roman numeral).
'stringed instrument' becomes 'viola' (viola is a kind of stringed instrument**).
'in' means one lot of letters goes inside another.
'possibly' is an anagram indicator.
'ten' with letters rearranged gives 'nte'.
'viola' going inside 'nte' is 'nviolate'.
'i'+'nviolate'='INVIOLATE'
(Other definitions for inviolate that I've seen before include "Undamaged" , "unspoiled" , "kept free from damage" , "completely untouched" , "very safe" .)