Neighbourhood detective's fooled, reportedly (8)
I believe the answer is:
district
'neighbourhood' is the definition.
(thesaurus)
'detective's fooled reportedly' is the wordplay.
'detective' becomes 'di' (Detective Inspector abbreviation).
'fooled reportedly' becomes 'strict' (I can't explain this - if you can you should believe this answer much more).
'di'+'strict'='DISTRICT'
Can you help me to learn more?
(Other definitions for district that I've seen before include "Locality" , "Territory, zone" , "Zone, area" , "Area (of a town/city)" , "A quarter" .)