deepest-rooted

Adjective

deep-rooted (comparative deeper-rooted, superlative deepest-rooted)

1. (literally) Of a plant, having deep roots.
   • He observed the leaves of trees there abouts more deeply green then else∣where, the Oakes broad-spreading, but not deep-rooted;1662, Thomas Fuller, The History of the Worthies of England, London: Thomas Williams, page 186
2. Of a non-living object, deeply and firmly embedded (in the ground, etc.)
3. (figuratively) Firmly established in thought or behavior and difficult to change.
   • They avoid conflict at all costs because of their deep-rooted fear of upsetting people.

   Synonyms:

   ineradicable, bred-in-the-bone, deep-seated, deep-lying