The meaning of imposter in dream | Dream Interpretation
To dream of an imposter suggests deception may be at play in your waking life. Be alert for meetings with others that generate ill feeling within.
To dream of yourself as an imposter indicates certain denial of your own feelings.
The message is to stop and take stock of your emotions in order to renew your intention to honor your own truth in all situations.
If you dream of an imposter, whatever the imposter is pretending to be is probably what you in real life are pretending to be.
The dream imposter is showing you your self-image.