Fine attitude is not quite the greatest? (4)

I believe the answer is:
fair
'fine' is the definition.
(I've seen this in other clues)
'attitude is not quite the greatest?' is the wordplay.
I cannot quite understand how this works, but
'attitude' could be 'air' (I've seen this before) and 'air' is found within the answer.
A single letter 'f' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for fair that I've seen before include "nothing special" , "Just - blonde - outdoor entertainment" , "clear" , "kind of entertainment" , "(Of weather) fine and dry" .)
