abandonment (
http://definr.com/abandonment)
n 1: the act of giving something up [syn:
forsaking,
desertion]
2: withdrawing support or help despite allegiance or
responsibility; "his abandonment of his wife and children
left them penniless" [syn:
desertion,
defection]
3: the voluntary surrender of property (or a right to property)
without attempting to reclaim it or give it away