Disconnected; objective (8)
I believe the answer is:
detached
This clue is a double definition.
'disconnected' is the first definition.
(similar in meaning)
'objective' is the second definition.
(similar in meaning)
(Other definitions for detached that I've seen before include "Unconnected" , "Not committed, objective" , "Unprejudiced" , "isolated" , "Separated from - maybe a house" .)