A bit hungover in Springfield? (5)

I believe the answer is:

dusty

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'springfield?' is the definition.
(as in Dusty Springfield)

I cannot understand how the rest of the clue works.

(Other definitions for dusty that I've seen before include "In need of a spring clean" , "----- Springfield, 1960s pop star" , "Boring" , "Grubby" , "Needing cleaning" .)

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

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