Ambushed far west of city with papers (7)
I believe the answer is:
waylaid
'ambushed' is the definition.
('waylay' can be a synonym of 'ambush')
'far west of city with papers' is the wordplay.
'far west of city' becomes 'way' (I can't explain this - if you can you should believe this answer much more).
'with' is a charade indicator (letters next to each other).
'papers' becomes 'laid papers' (laid paper is a kind of paper).
'way'+'laid'='WAYLAID'
Can you help me to learn more?
(Other definitions for waylaid that I've seen before include "Ambushed" , "Aggressively intercepted" .)