Above Uriah’s deviance: not a way to conduct oneself (9)
I believe the answer is:
behaviour
'above uriah's deviance not a' is the definition.
I can't tell whether this defines the answer.
'way to conduct oneself' is the wordplay.
I cannot quite understand how this works, but
'way' could be 'av' (short for avenue) and 'av' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for behaviour that I've seen before include "Conduct, demeanour" , "Conduct - performance" , "Bearing" , "Personal conduct" , "Comportment" .)