Following revolution, party moderates feel agitation (4)

I believe the answer is:

stew

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'agitation' is the definition.
(I know that stew is a type of agitation)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for stew that I've seen before include "Worried agitation" , "Meat and veg dish" , "Artificial oyster bed" , "Cook by simmering slowly" , "Dish cooked in a pot" .)

I've seen this clue in The Times.

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