Awe-inspiring, a US city (7)

I believe the answer is:

augusta

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'us city' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

(Other definitions for augusta that I've seen before include "Female name; capital of state of Maine" , "US state capital - girl's name" , "Lady Bracknell" , "US city" , "22 [MAINE] 's capital" .)

I've seen this clue in The Telegraph.

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