To dream of the dead warns that you could be surrounded by too many negative individuals, and that you are staying in touch with the wrong people. You could lose things because of this. This dream may also be a way to help you deal with the loss of certain people.
If you dream about those long passed, this means that a relationship or current circumstance is similar to that long-lost person. It could be that you simply need to let go of this current situation and allow it to die.
To see your dead parents in your dream signifies the apprehension of their ultimate fate or the way you are handling the loss. You may simply need one more chance to bid them farewell.
To dream about a dead sibling, relative, or acquaintance, suggests that you are longing for them and attempting to revive the times you shared. As you move through life, dreams offer an opportunity to deal with issues involving loss and grieving.