PDQ's kin (4)
I believe the answer is:
asap
'pdq's kin' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for asap that I've seen before include "Notation meaning with minimum delay" , "At one's earliest convenience" , "Initials notation meaning with all possible speed" , "Common acronym for quick-as-you-can" , "As soon as possible (abbrev.)" .)