Crossword Genius

Cunning chief (4)

Ross

I believe the answer is:

arch

I believe this is a double definition.

'cunning' is the first definition.
(I've seen this before)

'chief' is the second definition.
('arch' can be a synonym of 'chief')

(Other definitions for arch that I've seen before include "Chief - opening with curved top" , "Mischievous - shrewd" , "Clever" , "in short, is out of date" , "Prefix meaning cheif, perhaps enemy" .)

I've seen this clue in The Guardian and The Telegraph.
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