By a hair's breadth (4)
I believe the answer is:
just
(Other definitions for just that I've seen before include "free from bias" , "Hardly" , "Quite" , "Recently" , "Barely; impartial" .)
I believe the answer is:
just
(Other definitions for just that I've seen before include "free from bias" , "Hardly" , "Quite" , "Recently" , "Barely; impartial" .)