### Clue: Sanctimonious pedantry ends with the involvement of authority (7)
### Answer: PREACHY 
 ### Explanation: Definition: Sanctimonious
 **1st and last letters of**(… ends) "pedantry " **containing**(with the involvement of) REACH(the range in which power, or authority, is effective, as in "to be within the reach of the law").