Clear — just (4)
I believe the answer is:
fair
This clue is a double definition.
'clear' is the first definition.
(I've seen this in another clue)
'just' is the second definition.
(just can mean fair in the sense of showing justice)
(Other definitions for fair that I've seen before include "... enough! - that's reasonable" , "Decent" , "Traders' gathering" , "nothing special" , "'Just, reasonable (4)'" .)