If your dream appeared a usurper dream about this to the fact that, having shown an unhealthy ambition, you will become a laughingstock. People in positions of responsibility, such a dream could presage a complication of working conditions, the deterioration of discipline subordinate employees.
I dreamed that someone from your household usurped power in the family and started to dictate strict schedule - it might say about the accumulated (perhaps only subconsciously) irritation caused by family relations.
If you dream that you were a usurper, then there will be problems with the design of any important documents. After this dream must balance their desire to their capabilities, or very high risk of publicly embarrass.
To dream that you are a usurper, foretells you will have trouble in establishing a good title to property. If others are trying to usurp your rights, there will be a struggle between you and your competitors, but you will eventually win. For a young woman to have this dream, she will be a party to a spicy rivalry, in which she will win.