Person who is withdrawn or inward-looking (9)
I believe the answer is:
introvert
(Other definitions for introvert that I've seen before include "Reflective person" , "Self-absorbed person" , "one's reserved" , "Withdrawn type" , "Turn inwards" .)
I believe the answer is:
introvert
(Other definitions for introvert that I've seen before include "Reflective person" , "Self-absorbed person" , "one's reserved" , "Withdrawn type" , "Turn inwards" .)