[gras-roots, -roo ts, grahs-]
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noun (used with a singular or plural verb) Also grass roots.
  1. the common or ordinary people, especially as contrasted with the leadership or elite of a political party, social organization, etc.; the rank and file.
  2. the agricultural and rural areas of a country.
  3. the people inhabiting these areas, especially as a political, social, or economic group.
  4. the origin or basis of something; the basic or primary concept, rule, part, or the like.
adjective Also grass-roots.
  1. of, relating to, or involving the common people, especially as contrasted with or separable from an elite: a grassroots movement for nuclear disarmament.

Origin of grassroots

1910–15 Americanism for def 1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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