Coolly dispassionate (8)
I believe the answer is:
clinical
'coolly dispassionate' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for clinical that I've seen before include "Unemotional, cool and detached - in hospital ?" , "Unemotional, cool and detached like doctor" , "Coldly detached" , "description of a form of medicine" , "Dispassionate" .)