Mean dream meaning is explained below using 4 different sources. Each interpretation is shown with its source.

Interpretation 1 — Dream Explanations - Anonymous

If someone is mean in your dream, this is your shadow expressing itself; the part of you that is critical any negative belief you hold about yourself. This dream is an attempt to integrate your inner victim with your inner critic or judge.

See Witch and Integration Dreams.

Source: Strangest Dream Explanations Author: Dream Explanations - Anonymous

Interpretation 2 — Eric Ackroyd

This probably represents balance in your psyche, perhaps between a particular pair of opposites - for example, conscious and unconscious, masculine and feminine.

(= halfway between extremes)

Source: A Dictionary of Dream Symbols Author: Eric Ackroyd

Interpretation 3 — myjellybean

If you dream that someone is mean to you, you may have trouble and disappointment in some situation, possibly with that person.
Source: My Dream Interpretation Author: myjellybean

Interpretation 4 — Margaret Hamilton

A literal warning
Source: Dream Dictionary Unlimited Author: Margaret Hamilton