Laurent terribly indifferent (7)
I believe the answer is:
neutral
'indifferent' is the definition.
(I know that indifferent can be written as neutral)
'laurent terribly' is the wordplay.
'terribly' indicates an anagram.
'laurent' with letters rearranged gives 'NEUTRAL'.
(Other definitions for neutral that I've seen before include "Where gears are not engaged" , "Impartial; plug wire" , "A runlet? (anag)" , "Supporting neither side" , "Not allied to either side" .)