Concern for others (8)
I believe the answer is:
altruism
'concern for others' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for altruism that I've seen before include "Unselfish generosity" , "Unselfishness, Philanthropy" , "Unselfishness found in ultraism" , "Unselfish concern for the welfare of others" , "Selfless concern for the well-being of others" .)