grass roots
US /ˈɡræs ruːts/
UK /ˈɡræs ruːts/

1.
base, radici
the most basic level of an activity or organization
:
•
The movement gained support at the grass roots level.
Il movimento ha ottenuto sostegno a livello di base.
•
We need to build support from the grass roots up.
Dobbiamo costruire il supporto dalle basi.
1.
di base, popolare
of or relating to the ordinary people in an organization or political party, rather than its leaders or most important members
:
•
The campaign focused on grass roots organizing.
La campagna si è concentrata sull'organizzazione di base.
•
He believes in grass roots democracy.
Crede nella democrazia di base.