### Clue: Restless knight in employment with one coming from upper-class (9)
### Answer: UNSETTLED 
 ### Explanation: Definition: Restless
 N(abbrev. for "knight" in chess) **contained in**(in) USE(employment) **plus**(with) "titled"(upper-class) **minus**(… coming from) "I"(Roman numeral for "one").