Thoughtful, reflective (7)
I believe the answer is:
pensive
This clue is a double definition.
'thoughtful' is the first definition.
(similar in meaning)
'reflective' is the second definition.
(I know that reflective can be written as pensive)
(Other definitions for pensive that I've seen before include "Thinking deeply" , "Engaged in deep thought" , "Introspective, maybe moody" , "musing" , "Deeply thoughtful" .)