abandonment abandonment /əˈbændənmənt/

noun

1. () The act of giving something up  ( desertion , forsaking , abandonment )
   the act of giving something up
     She felt a deep sense of abandonment when her best friend moved away without saying goodbye.
   She felt a deep sense of abandonment when her best friend moved away without saying goodbye.
   
2. () Withdrawing support or help despite allegiance or responsibility  ( abandonment , defection , desertion )
   withdrawing support or help despite allegiance or responsibility
    His abandonment of his wife and children left them penniless
   his abandonment of his wife and children left them penniless
   
3. The voluntary surrender of property (or a right to property) without attempting to reclaim it or give it away  ( abandonment )
   the voluntary surrender of property (or a right to property) without attempting to reclaim it or give it away