Bring on oneself (5)
I believe the answer is:
incur
'bring on oneself' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for incur that I've seen before include "Bring on oneself, probably unpleasant" , "Become responsible for" , "Lay oneself open to" , "Become liable or subject to" , "Bring on oneself, say costs" .)