deeply ingrained or well-established; literally means the roots are deep and the base is firm, so it cannot be easily shaken or removed

in the final analysis; when all is said and done; fundamentally

Deeply rooted and firm; used to describe a solid foundation that cannot be shaken.

to trace back to the source; to summarize by looking at the fundamental cause or essence of a situation; in the final analysis

The root of a plant or tree.

To trace something back to its roots; to investigate a matter thoroughly to its very source.