Do-gooder mostly right to infiltrate select group? (8)
I believe the answer is:
altruist
'do-gooder' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for altruist that I've seen before include "Philanthropist" , "Person who acts from unselfish motives" , "Person who does good from unselfish motives" , "One concerned with others' interest" , "One who lives and acts in the interests of others" .)