Crossword Genius

Regret one voting against dull head (12)

Ross

I believe the answer is:

contriteness

'regret' is the definition.
(thesaurus)

'one voting against dull head' is the wordplay.
'one voting against' becomes 'con' (con can mean someone opposing something).
'dull' becomes 'trite' (I've seen this before).
'head' becomes 'ness' (ness is a headland).
'con'+'trite'+'ness'='CONTRITENESS'

(Another definition for contriteness that I've seen is " penitence".)

I've seen this clue in The Times.
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