If you were throwing something away in your dream, its generally means you want to cleanse or rid yourself of something or someone in your waking life.
Consider what you were throwing away as this will give you greater insight into what you need to leave behind.
If someone was throwing something at you in your dreamscape, then you may have overlooked a key piece of information so pay closer attention to what others are telling you.
It could be alerting you to something that is coming your way and you need to prepare yourself for it. Consider how hard the throw was- if it took you by surprise, then you won’t expect whatever it is. If it was soft, then you may have your suspicions.
If you were throwing away someone else’s things- perhaps you are overstepping the mark with someone in your waking hours. It’s highly possible they don’t need you to make decisions for them and they are perfectly capable of organising their own affairs.
The act of throwing things way- either yours or someone else's is also about wanting to rid yourself of qualities or aspects of your personality you don't like. Perhaps you see some of your behaviours or habits as redundant- if so, it might be time to leave those behind and start something new or stick with those that are beneficial to you.
Or it could be more literal and the excess things in your dream might be giving you a nudge to sort through the clutter in your own life or home, so you can see and think more clearly. Has your space become overrun with unnecessary items?
Perhaps you often throw away opportunities in your waking life and your subconscious is trying to tell you to make the most of them rather than discarding them without a second thought.
Source: The Complete A-Z Dictionary of Dreams by Ian Wallace
tagged in Dream Interpretation