1. To get rid of someone from their job or sport's team because their work is not good enough or because they are no longer needed. English = dismiss. Informal English = sack, lay off, put off, drop.
2. To not keep or not accept something because it is not good enough or not wanted. English = reject. Informal English = brush off, brush aside.
3. To decide that someone or something is not important or not good enough to stay or to think about. English = dismiss.
4. To stop doing something or stop having something; to go without something. Formal religious English = forsake.