Without catalogues, without interest (10)
I believe the answer is:
listlessly
'without' is the definition.
Both the definition and answer are adverbs.
Maybe they are linked in a way I don't understand?
'catalogues without interest' is the wordplay.
'catalogues' becomes 'list'.
'without' becomes 'less' (I've seen this in another clue).
'interest' becomes 'ly' (I can't justify this - if you can you should give a lot more credence to this answer).
'list'+'less'+'ly'='LISTLESSLY'
Can you help me to learn more?
(Other definitions for listlessly that I've seen before include "Koko would never sing his party piece so" , "unenthusiastically" , "unenthusiastic manner" , "Languidly" .)