| Rating | Solver | Clue |
|---|---|---|
| INGRAINED | Deep-rooted | |
| INNATE | Deep rooted | |
| INVETERATE | Firmly established by long continuance; obstinate; deep-rooted; of long standing; as, an inveterate disease; an inveterate abuse. | |
| ROOT | To plant and fix deeply in the earth, or as in the earth; to implant firmly; hence, to make deep or radical; to establish; -- used chiefly in t... | |
| INVETERACY | Firm establishment by long continuance; firmness or deep-rooted obstinacy of any quality or state acquired by time; as, the inveteracy of custo... | |