Scowling, dropping some flour in gravy (7)

I believe the answer is:

louring

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'scowling dropping' is the definition.
I can't tell whether this defines the answer.

'some flour in gravy' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'LOURING' is hidden within 'flour in gravy'.

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I've seen this clue in The Guardian.

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