Wiktionary
grass-roots
a. (alternative spelling of grassroots English)
Usage examples of "grass-roots".
I believe that you will find in every case that the recommendation comes from experience with some other type of campaigning than the volunteer, Grass-Roots Campaign.
This non-involvement or, at best, limited participation, has been sharply criticized by those who see in it a menace to the traditional ideal of grass-roots democracy.