To taste alum, denotes secret remorse over some evil work by you upon some innocent person.
For a woman to dream of quantities of alum, foretells disappointment in her marriage and loss of affection. [1]
If the alum turns sweet in the mouth, there will be a satisfactory solution of the problem involved. [2]
If one melts it in a dream, it means that he argues for the sake of a cheap matter.
If one sees a piece of alum or a yellow piece of metal in a dream, it means that he will be addressed with harsh words or become subject to slander and defamation. [5]