To dream of an enchantress suggests you have surrendered to some kind of feminine glamor or mastery in your waking life. For example, if you were enchanted by a performance by a female singer, then this is a dream about surrendering to something in your waking life with values irrational. It could also be about surrendering to feelings for a woman that are beyond the boundaries of reality and facing consequences for those feelings.
An enchantress is someone who supposedly possesses magical powers that can cause an individual to be mentally affected. The dream may be predicting the enchantress has some nefarious plans and is going to try to put the dreamer in a state of fear, anxiety or stress. In this interpretation, the enchantress could represent a threat to the personal security and wellbeing of the dreamer.
Dreaming about an enchantress may show you are immersed in an affair with someone who wants to lead you into the dark, disreputable side of love, represented through imagery of wild women, witches, or sorceresses.