Wrongfully took letters out of Chile, possibly (7)
I believe the answer is:
filched
'wrongfully took' is the definition.
The definition and answer can be both to do with ownership as well as being past participle verbs.
Perhaps you can see a link between them that I can't see?
'letters out of chile possibly' is the wordplay.
'letters' becomes 'fd' (I can't justify this - if you can you should give a lot more credence to this answer).
'out of' indicates putting letters inside (some letters on the outside of others).
'possibly' indicates anagramming the letters.
'chile' anagrammed gives 'ilche'.
'fd' going around 'ilche' is 'FILCHED'.
Can you help me to learn more?
(Other definitions for filched that I've seen before include "ripped off" , "Pilfered, stole thing of small value" .)