Crossword Genius

Quite happily under canvas in cold, single (11)

Ross

I believe the answer is:

contentedly

'quite happily' is the definition.
(with contentment)

'under canvas in cold single' is the wordplay.
'under canvas' becomes 'tented' (in a tent).
'in' indicates putting letters inside.
'cold' becomes 'C' (eg on taps).
'single' becomes 'only' (similar in meaning).
'c'+'only'='conly'
'tented' put within 'conly' is 'CONTENTEDLY'.

(Another definition for contentedly that I've seen is " In a satisfied way".)

I've seen this clue in The Times.
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