Indicating that a claim or statement of status was made by the person who benefits from the announcement
He was self-proclaimed king of the mountain, since it was a mountain of garbage no one else wanted the title and we let him keep saying it.
Self-proclaimed is used to show that someone says themselves that they are a type of person which most people would be embarrassed or ashamed to be. One of the prisoners is a self-proclaimed racist who opened fire on a crowd four years ago. = self-declared. having given yourself a position or title without the approval or agreement of other people - used to show disapproval
Self-proclaimed is used to show that someone has given themselves a particular title or status rather than being given it by other people. a self-proclaimed expert He is President of his own self-proclaimed republic. = self-confessed