Crossword Genius

About duke being a dishonourable person (3)

Ross

I believe the answer is:

cad

'a dishonourable person' is the definition.

'about duke' is the wordplay.
'about' becomes 'ca' (abbreviation for 'circa'**).
'duke' becomes 'd'.
'ca'+'d'='CAD'

'being' is the link.

(Other definitions for cad that I've seen before include "Rotter, bounder" , "Stinker" , "designing software" , "A rotter, by Jove" , "A rotten chap, no integrity" .)

I've seen this clue in The Mirror.
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