greeny

/G R IY1 N IY0/
noun
  1. 1

    An environmentalist; someone who shows concern for the environment.

  2. 2

    (by extension) A member of the Green Party.

  3. 3

    (Wyoming) A person from Colorado; after the color of the Colorado license plate.

  4. 4

    An unripe fruit.

  5. 5

    A beginner, a novice.

  6. 6

    A small, green object or creature.

adjective
  1. 1

    Greenish; like green, combined with green

Source: https://en.wiktionary.org/wiki/greenie, https://en.wiktionary.org/wiki/greeny