English audacity, with opponents getting laundered cash (10)

'english' is the definition.
(Sassenachs is a Scottish term for the English)

'audacity with opponents getting laundered cash' is the wordplay.
'audacity' becomes 'sass' (sass can mean audacious behaviour).
'with' is a charade indicator (letters next to each other).
'opponents' becomes 'en' (I've seen this in other clues).
'getting' says to put letters next to each other.
'laundered' indicates anagramming the letters (letters cleaned up).
'cash' anagrammed gives 'achs'.
'sass'+'en'+'achs'='SASSENACHS'