If you dream that you have failed in the cellar - it's to the rubble exam.
To dream that you are in a basement, symbolizes your unconscious mind and intuition. The appearance of the basement is an indication of your unconscious state of mind and level of satisfaction. It represents primal urges, animalistic desires and basic needs. The dream may also be metaphor for "abasement" or being "debased". Are you feeling humbled or unworthy?
To dream that the basement is in disarray and messy, signifies some confusion in which you need to sort out. It may also represent your perceived faults and shortcomings.
Symbolizes your unconscious mind and intuition. If the basement is clean and neat, you are happy and well-adjusted. If the basement is dark and spooky or messy and dirty, you are unhappy with your life right now.
To dream that you are in a basement, foretells that you will see prosperous opportunities abating, and with them, pleasure will dwindle into trouble and care. See Cellar.
Your perceived faults, shortcomings, fear of those with power over you.
Your subconscious mind. Pay attention to what's going on in the basement and how you feel about it for clues about the thoughts and feelings going on in your subconscious mind right now.