I. noun
1.
Synonyms: source , derivation, fountain, fountainhead, inception, origin, provenance, provenance, well, wellhead
Related Word: basis, foundation, ground
2.
Synonyms: basis 1, base, bedrock, footing, foundation, ground, groundwork, infrastructure, substratum, underpinning
3.
Synonyms: center 3, core, heart, pith, quick
4.
Synonyms: essence 2, bottom, essentiality, marrow, pith, quintessence, rock bottom, soul, stuff, substance
II. verb
Synonyms: entrench 1, embed, fix, infix, ingrain, lodge
Antonyms: uproot
III. verb
Synonyms: applaud 2, cheer, rise (to)