### Clue: I shot subordinate of ensign at the front (3)
### Answer: EGO 
 ### Explanation: Definition: I
 GO(a shot;an attempt, as in "have a go at it") **placed below**(subordinate of;inferior to, in a down clue) **1st letter of**(… at the front) "ensign".
Defn: One's self;one's sense of identity.