Warning
To dream of a warning represents feelings about potential danger with your current choices or actions. Feelings that you are doing something wrong and need to change. Sensing danger or possible future embarrassment. Feeling the potential to "cross a line." Anxiety about potential consequences for your actions. Doubts or uncertainties you have. Feeling an urgent need to act.
Negatively, a warning may reflect your intuition about wanting to avoid confronting guilt or dishonesty. Feeling that you need to take action to avoid being caught doing something illegal. Intuitive feelings about wanting to avoid being embarrassed for something that you are fully aware of being wrong with. Planning to change bad behavior only when it begins to embarrass you. Awareness of yourself choosing to not get involved in other people's problems when it may spare someone from serious problems.
Alternatively, in a negative context, dreaming about warnings may reflect strong feelings of paranoia or fear of things you don't understand. Fearing things you don't understand or sensing that people you haven't spent any time getting to know personally are dangerous.
Example: A wealthy man dreamed of his mother warning him about needing to kill a cat before it got away from him. In waking life he was intentionally lying to his son about helping him financially in order to maintain control over his son and when his son found a way around his control he felt that if he didn't take action soon he would humiliate himself being exposed for his lies in front of the whole family. The mother giving the man a warning may have reflected his intuition about the future sensing danger about potential embarrassment.
Example 2: A woman dreamed of herself wanting to warn people about a snake. In waking life she was hesitating to warn her husband about dangers she felt existed with a business opportunity he was about to get involved with. She hesitated.