† fellow-knowern. [after classical Latin conscius, noun (see consciousadj.)] Obsoleterare a person privy to the knowledge or thoughts of another specified person; cf. fellow-knowingadj.
ΘΚΠ
the mind > mental capacity > knowledge > secrecy, concealment > [noun] > knowledge of secrets > one who has knowledge
secretist1661
fellow-knower1662
insider1848
inside1926
1662 J. Chandler tr. J. B. van Helmont Oriatrike xvi. 88 Not that I am a conscious or a fellow-knower [L. conscius] of, or a searcher into divine Counsel.