Businesslike (2-8)
I believe the answer is:
no-nonsense
'businesslike' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for no-nonsense that I've seen before include "Simple, straightforward" , "Sensible and straightforward" , "Down-to-earth" , "Simple, sensible" , "Straightforward, practical" .)