abandonment in WordNet English dictionary

1. withdrawing support or help despite allegiance or responsibility
   "his abandonment of his wife and children left them penniless"
   desertion  abandonment  defection 
   
2. the voluntary surrender of property (or a right to property) without attempting to reclaim it or give it away
   abandonment 
   
3. the act of giving something up
   abandonment  forsaking  desertion