Banality means one looks for new interests (9)
I believe the answer is:
triteness
'banality' is the definition.
(I've seen this in another clue)
'new interests' is the wordplay.
'new' is an anagram indicator.
'interests' with letters rearranged gives 'TRITENESS'.
'means one looks for' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for triteness that I've seen before include "Lack of originality" , "Interests (anag.)" , "Interests of some staleness" , "Banality" , "Unoriginality" .)