Appearance; demeanour (4)
I believe the answer is:
mien
This clue is a double definition.
'appearance' is the first definition.
(I've seen this before)
'demeanour' is the second definition.
(mien is a kind of demeanour)
(Other definitions for mien that I've seen before include "Person's bearing" , "A person's demeanour" , "Bearing, demeanour" , "aspect" , "attitude" .)