### Clue: Responsible adult resentful – minding hell for the most part? (10)
### Answer: BABYSITTER 
 ### Explanation: Definition: Responsible adult
 BITTER(resentful) **containing**(minding) "abyss"(hell, where evil spirits dwell) **minus its last letter**(for the most part).
Defn: … minding one that could be hell to mind.