Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In Jewish folklore, a dybbuk (Yiddish: , from Hebrew attachment) is a malicious or malevolentcite_ref-0 possessing spirit believed to be the dislocated soul of a dead person.cite_ref-1 Dybbuks are said to have escaped from Sheol or to have been turned away for serious transgressions, such as suicide, for which the soul is denied entry.[citation needed] The word "dybbuk" is derived from the Hebrew , meaning "attachment"; the dybbuk attaches itself to the body of a living person and inhabits the flesh. According to belief, a soul that has been unable to fulfill its function during its lifetime is given another opportunity to do so in dybbuk form. It supposedly leaves the host body once it has accomplished its goal, sometimes after being helped.