Inferior with shoes extremely dirty (6)
I believe the answer is:
shoddy
'inferior' is the definition.
(similar in meaning)
'with shoes extremely dirty' is the wordplay.
'with' is a charade indicator (letters next to each other).
'shoes' becomes 'shod' (I am not sure about this - if you are sure you should believe this answer much more).
'extremely' suggests removing the centre (only the extremes of the word are used).
'dirty' with its middle removed is 'dy'.
'shod'+'dy' is 'SHODDY'.
Can you help me to learn more?
(Other definitions for shoddy that I've seen before include "Gimcrack" , "Kind of worsted" , "recycled material" , "poor quality fabric" , "Cheap and nasty" .)