Eggs on with slightly sour gestures (5)

I believe the answer is:

urges

'eggs on' is the definition.
(I've seen this in another clue)

'with slightly sour gestures' is the wordplay.
'with' indicates the answer is hidden within the clue.
'URGES' is hidden in the letters of 'slightly sour gestures'.

(Other definitions for urges that I've seen before include "Strong impulses" , "Advocates strongly" , "Eggs on" , "Exhorts or prods" , "Encourages" .)

I've seen this clue in the Sydney Morning Herald.

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