Nonchalance from barbers oddly accepting on-line issues (10)
I believe the answer is:
breeziness
'nonchalance' is the definition.
The answer and definition can be both human attributes as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'barbers oddly accepting on-line issues' is the wordplay.
'oddly' indicates alternate letters (letters in odd-numbered positions).
'accepting' means one lot of letters goes inside another (inserted letters are accepted).
'on line issues' becomes 'ezines' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
The alternating letters of 'barbers' are 'bres'.
'bres' enclosing 'ezines' is 'BREEZINESS'.
'from' is the link.
Can you help me to learn more?
(Another definition for breeziness that I've seen is " Windy state".)