If you have dreamed of forgetting your key: Some problems may continue in professional matters, listen to your intuition. Forgetting your key in a dream is seen as a symbol of misfortune, trouble to be experienced and having trouble, not being able to lead a healthy life. We can also say that the person who forgets his key will be devastated by bad news and will feel deeply saddened. It indicates that the person will suffer a great loss financially.