Business with a blonde, we hear (6)
I believe the answer is:
affair
'business' is the definition.
(I've seen this in another clue)
'a blonde we hear' is the wordplay.
I cannot quite understand how this works, but
'a' is within the answer.
'blonde' could be 'fair' (similar in meaning) and 'fair' is located in the answer.
A single letter 'f' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'with' acts as a link.
(Other definitions for affair that I've seen before include "Concern, matter or illicit romance" , "Subject" , "Singular business" , "A fling (or something more serious?)" , "Vaguely specified concern" .)