Synonyms of grass-roots

1 Syllable

first, key

2 Syllables

prime, bottom, major, basal, grassroots, vital, central, crucial

3 Syllables

principal, supporting, organic, underlying, substratal, paramount, primordial, structural, essential, cardinal, integral, primary, intrinsic, sustaining, bottom-line, radical

4 Syllables

elemental, foundational, underived, significant, fundamental, theoretical, requisite, substrative, axiomatic, necessary, primitive, original

5 Syllables

elementary, meat-and-potatoes, constitutional, constitutive, axiological, rudimentary, indispensable