eco freak

eco-freak

A derogatory term for someone who is passionate about environmental issues. Is anyone surprised that those eco-freaks in my neighborhood have taken up composting?
Farlex Dictionary of Idioms.

eco freak

and eco nut (ˈiko frik and ˈiko nət)
n. someone with strong concerns about the environment and conservation. (Mildly derogatory. From ecology.) They call me an eco freak, which is okay by me. The eco freaks are protesting the tree trimming.
See also: eco, freak
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • eco
  • eco-freak
  • eco-nut
  • eco nut
  • eagle freak
  • blob
  • foundry
  • nut factory
  • nut-foundry
  • nuthouse