Environmentalist (7)
'environmentalist' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for greenie that I've seen before include "Environmental campaigner" , "Environmentalist" , "Environment campaigner (colloquial)" , "conservationist, rudely" , "Australian conservationist" .)
'environmentalist' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for ecologist that I've seen before include "Environmentalist" , "One concerned with the environment" , "Studier of organisms and the environment" , "See scientist" , "One studying the relation between organisms and their environment" .)