What does it mean when you dream of a person that died telling you that they are thirsty?

This dream suggests that you cared for the deceased and continue to feel as if you need to help them or to do something to ease their suffering. Such dreams are not unusual when you are mourning a deep loss. They reflect your own sorrow and sense of helplessness, but they do not mean that the deceased is suffering in any way. This dream is not foretelling any future event or providing supernatural information of any kind.