Deportation when former partner ignored custom (9)
I believe the answer is:
tradition
'custom' is the definition.
(I know that custom can be written as tradition)
'deportation when former partner ignored' is the wordplay.
I cannot quite see how this works, but
'when' could be 'on' (I've seen this in other clues) and 'on' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for tradition that I've seen before include "Established custom" , "customary behaviour" , "stuck in the old ways" , "Custom, long-standing practice" , "Inherited pattern of thought or action" .)