Crossword Genius

Son feebly playing alone (2,7)

Ross

I believe the answer is:

by oneself

'alone' is the definition.
(on one's own)

'son feebly playing' is the wordplay.
'playing' indicates an anagram.
'son'+'feebly'='sonfeebly'
'sonfeebly' anagrammed gives 'BY ONESELF'.

I've seen this clue in The Guardian.
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