Really impresses (4)

I think it could be either:

wows

awes

'really impresses' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Another definition for wows that I've seen is " is amazing".)

I've seen this clue in the USA Today, the King Feature Syndicate, The Wall Street Journal, The New York Times and the Universal.

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