A way to call up, being indifferent (9)
I believe the answer is:
apathetic
'indifferent' is the definition.
('apathetic' can be a synonym of 'indifferent')
'a way to call up' is the wordplay.
I cannot quite see how this works, but
'a' is present in the answer.
'way' could be 'path' (path is a kind of way) and 'path' is located in the answer.
This explanation may well be incorrect...
'being' acts as a link.
Can you help me to learn more?
(Other definitions for apathetic that I've seen before include "Listless, lacking in interest" , "Showing no emotion or interest" , "Uninterested, lethargic" , "I hate pact, being disintersted" , "past caring?" .)