### Clue: Church dignitary that's opposed to 15 (8)
### Answer: CARDINAL 
 ### Explanation: Definition: Church dignitary,that's opposed to 15
 Double defn: 1st: Leading … in the Roman Catholic Church, nominated by the Pope; and 2nd: A number denoting quantity(1, 2, 3, etc.) as opposed to an "ordinal"(answer to 15 across).