Crossword Genius

Behaved amorously — when papa’s wife fainted (7)

Ross

I believe the answer is:

swooned

'fainted' is the definition.
('swoon' can be a synonym of 'faint')

I don't understand how the remainder of the clue works.

(Other definitions for swooned that I've seen before include "collapsed" , "Fainted" .)

I've seen this clue in The Times.
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