Compassionate, benevolent (6)
I believe the answer is:
humane
I believe this clue is a double definition.
'compassionate' is the first definition.
(similar in meaning)
'benevolent' is the second definition.
(I've seen this before)
(Other definitions for humane that I've seen before include "Kind and merciful" , "Benign - kind" , "Kind and sympathetic" , "Showing compassion for animals" , "Merciful and considerate" .)