"And make it snappy!" (4)

I believe the answer is:

asap

(Other definitions for asap that I've seen before include "Notation meaning with minimum delay" , "Initials notation meaning with all possible speed" , "Notation meaning without delay, treat as urgent" , "As soon as possible (abbrev.)" , "Notation for urgent, quick as you can (4)" .)

I've seen this clue in the Universal and The New York Times.

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