A queen forbidding son's passions (7)

I believe the answer is:

ardours

'passions' is the definition.
(ardour is a kind of passion)

'a queen forbidding son's' is the wordplay.
'queen' becomes 'r' (abbreviation for regina, e.g. in ER ).
'forbidding' becomes 'dour' (I've seen this in another clue).
'a'+'r'+'dour'+'s'='ARDOURS'

I've seen this clue in The Independent.

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