Dirty and maggoty (6)
I believe the answer is:
grubby
This clue could be a double definition.
'dirty' is the first definition.
(similar in meaning)
'maggoty' is the second definition.
Both the answer and definition are adjectives. Maybe you can see an association between them that I can't see?
'and' is the link.
Can you help me to learn more?
(Other definitions for grubby that I've seen before include "Dirty or unwashed, as urchin may be" , "Covered with ingrained dirt" , "Dirty, grimy" , "Dirty, could do with with a wash" , "Squalid" .)