Stay mad ignoring mother successfully (5)
I believe the answer is:
dwell
'stay' is the definition.
(I've seen this before)
'mad ignoring mother successfully' is the wordplay.
'ignoring' is a deletion indicator.
'mother' becomes 'ma' (ma can mean mother).
'successfully' becomes 'well' (I've seen this in other clues).
'mad' with 'ma' taken out is 'd'.
'd'+'well'='DWELL'
(Other definitions for dwell that I've seen before include "Hang out" , "Inhabit" , "Settle" , "Live (in a place)" , "Reside - linger" .)