Policeman not skating, right? (7)
I believe the answer is:
officer
'policeman' is the definition.
(synonyms)
'not skating right?' is the wordplay.
'not' becomes 'off' (I am not sure about this - if you are sure you should believe this answer much more).
'skating' becomes 'ice skating' (ice skating is a kind of skating).
'right?' becomes 'r' (common abbreviation).
'off'+'ice'+'r'='OFFICER'
Can you help me to learn more?
(Other definitions for officer that I've seen before include "Person with authority in the forces" , "Person holding authoritative position" , "9 across" , "Military person in authority" , "who has a public position" .)