Overwhelm woman in order to stop current engagement (8)
I believe the answer is:
inundate
'overwhelm' is the definition.
(inundate can mean to overwhelm or overload)
'woman in order to stop current engagement' is the wordplay.
'woman in order' becomes 'nun' (I've seen this before).
'to stop' indicates putting letters inside (stopping can mean blocking a gap).
'current' becomes 'I' (symbol for electric current).
'engagement' becomes 'date' (synonyms).
'i'+'date'='idate'
'nun' inserted inside 'idate' is 'INUNDATE'.
(Other definitions for inundate that I've seen before include "Flood, fill completely" , "Overwhelm with things to be done" , "Aunt Enid could engulf badly" , "Flood (a place)" , "Flood, cover with water" .)