The most common and most likely answer to this crossword clue is the 8 letter word ECOFREAK
I've seen this crossword clue in The Guardian
E
C
O
F
R
E
A
K
More clues leading to the result ECOFREAK
- Poker face: not starting to turn green
- Nutty green apple finally getting shredded for cake
- Eccentric boundlessly poker-faced environmentalist
- Fake core ruined green nut
- Someone who cares for earth organises force to take on each kind, to begin with
- Essentially poker-faced, but devious tree-hugger perhaps
Buddy explains!
The straight part
We know that "Nutty green" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case nutty green = ecofreak.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ECOFREAK mean?
ECOFREAK noun- A person with a passion for protecting the natural environment; an ecological activist.