Undiluted (4)

I believe the answer is:

neat

'undiluted' is the definition.
(similar in meaning)

This is the entire clue.

(Other definitions for neat that I've seen before include "Bovine animal" , "Clean and tidy" , "farm animals" , "Very good American" , "As whisky may be" .)

I've seen this clue in The Independent, the Penny Press, The Star Tribune, The Mirror, the Newsday, the King Feature Syndicate, the Evening Standard and The Telegraph.

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