Distinctive air (4)
I believe the answer is:
aura
'distinctive air' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aura that I've seen before include "Distinctive atmosphere surrounding person or thing" , "subtle emanation" , "Emanation - distinctive air" , "Atmosphere or glow surrounding a person" , "Distinctive quality around a person or place" .)