Crossword Genius

Bubble, say, flying low after delivery (4,5)

Ross

I believe the answer is:

baby blues

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'low after delivery' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'bubble say flying' is the wordplay.
'flying' indicates an anagram (letters fly around into new positions).
'bubble'+'say'='bubblesay'
'bubblesay' with letters rearranged gives 'BABY BLUES'.

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I've seen this clue in The Times.
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