### Clue: English king upset large part of church before start of divorce is declined (8)
### Answer: RELAPSED 
 ### Explanation: Definition: declined
 **Reversal of**(… upset, in a down clue) [E(abbrev. for "English") + R(abbrev. for "Rex"/king)] + L(abbrev. for "large") + APSE(a large recess in a church) + **1st letter of**(start of) "divorce".