Dream about someone giving a key expresses your frustrations about not being taken seriously. You are not in control of your own life. Your hard work will pay off in the long run. Your dream is unfortunately an alert for flexibility in your thinking or fluidity in your emotions. Perhaps you are feeling ignored, neglected, or overshadowed.
Someone giving a key dream is a warning signal for unexpressed fears or emotions, such as anger, rage, turmoil, etc. You are using your power to defend yourself against the fear and anger. You have said too much and you need to keep your mouth shut. This dream is a sign for some suppressed hurt or previous trauma that is coming up to the surface. You feel trapped or that your life is too rigid and inflexible.
If you dreamt about someone giving a key:
You may try to be as backward in coming forward as you can concerning a certain person, but it seems to be very hard to get the message through to them. You will have to tell them more directly if you want to be left alone.