Someone getting even with a vice principal before green revolution (7)
I believe the answer is:
avenger
'someone' is the definition.
(avenger is a kind of someone)
'a vice principal before green revolution' is the wordplay.
'principal' says to take the initial letters (the principal letter is the first letter).
'before' is a charade indicator (letters next to each other).
'revolution' indicates anagramming the letters.
The initial letter of 'vice' is 'v'.
'green' is an anagram of 'enger'.
'a'+'v'+'enger'='AVENGER'
'getting even with' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for avenger that I've seen before include "One exacts retribution" , "He seeks satisfaction or retribution" , "One who retaliates -- engrave (anag)" , "one evening?" , "One who seeks or obtains satisfaction for injury" .)