Crossword Genius

Betrayed prisoner, angry being locked up (7,2)

Ross

I believe the answer is:

cheated on

'betrayed' is the definition.
('cheat on' can be a synonym of 'betray')

'prisoner angry being locked up' is the wordplay.
'prisoner' becomes 'con' (abbreviation for 'convict').
'angry' becomes 'heated' (I've seen this in another clue).
'being locked up' indicates putting letters inside.
'con' going around 'heated' is 'CHEATED ON'.

(Another definition for cheated on that I've seen is " Betrayed".)

I've seen this clue in The Times.
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