Relating to a person (5)
I believe the answer is:
human
'relating to a person' is the definition.
(relating to a human or humanity)
This is all the clue.
(Other definitions for human that I've seen before include "Being that's apt to err?" , "Man, woman or child" , "Not divine, animal or mechanical" , "Mortal; compassionate" , "Relating to a person" .)