Move slightly and cause a fuss? (4)

I believe the answer is:

stir

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'move slightly' is the definition.
(I know that to stir is to move slightly)

I cannot understand how the remainder of the clue works.

(Other definitions for stir that I've seen before include "College" , "Get moving" , "Disturb" , "Whisk or mix" , "Sensation" .)

I've seen this clue in The Irish Times.

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