* Covered in dirt? (6,4)
'covered' is the definition.
Both the answer and definition are adjectives.
Maybe there's an association between them I don't understand?
'dirt?' is the wordplay.
I cannot quite understand how this works, but
'dirt?' could be 'filth' ('filth' can be a synonym of 'dirt') and 'filth' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'in' acts as a link.
Can you help me to learn more?
(Other definitions for filthy that I've seen before include "Dirty - smutty" , "to be so rich?" , "Mucky" , "Really dirty, disgusting" , "rude?" .)