Broken potty (7)
I believe the answer is:
cracked
This clue could be a double definition.
'broken' is the first definition.
(cracking is a kind of breaking)
'potty' is the second definition.
Both the definition and answer are adjectives. Perhaps they are linked in a way I don't understand?
Can you help me to learn more?
(Other definitions for cracked that I've seen before include "Fractured" , "Slangily eccentric - or broken" , "Having fissures" .)