Plenipotentiary

None but the like-minded can come plenipotentiary to our court.

1937, P. G. Wodehouse, 'Lord Emsworth and Others', Overlook, Woodstock: 2002, p 232. Meeting him in the street and ignoring the foul bowler hat he wore on his walks abroad, you would have put him down as a Bishop in mufti or, at the least, a plenipotentiary at one of the better courts.

Two of them are hanging up there on Golgotha, and that ought to be enough to show the authority of Rome’s ah plenipotentiary.

Near-synonyms: omnicompetent; omnipotent, almighty, all-powerful