Suffer at home with scoundrel (5)
I believe the answer is:
'suffer' is the definition.
(to incur is to suffer or experience)
'home with scoundrel' is the wordplay.
'home' becomes 'in' (to be in is to be (at) home).
'with' is a charade indicator (letters next to each other).
'scoundrel' becomes 'cur' (cur can mean a despicable person).
'at' acts as a link.
(Other definitions for incur that I've seen before include "Bring on oneself, probably unpleasant" , "Become subject to (penalty)" , "Bring something unpleasant on oneself (5)" , "Assume" , "Become responsible for" .)