Just beautiful! (4)
I believe the answer is:
fair
I believe this is a double definition.
'just' is the first definition.
('fair' is associated in meaning with 'just')
'beautiful' is the second definition.
(I've seen this before)
(Other definitions for fair that I've seen before include "Reasonable - market" , "Moderate" , "The mart is blond" , "Attractive type of weather?" , "Market for the sale of produce" .)