Apostasy (əˈpɒstəsi; ἀποστασία , 'a defection or revolt') is the formal disaffiliation from, abandonment of, or renunciation of a religion by a person. It can also be defined within the broader context of embracing an opinion that is contrary to one's previous religious beliefs. One who undertakes apostasy is known as an apostate. Undertaking apostasy is called apostatizing (or apostasizing – also spelled apostacizing). The term apostasy is used by sociologists to mean the renunciation and criticism of, or opposition to, a person's former religion, in a technical sense, with no pejorative connotation. Occasionally, the term is also used metaphorically to refer to the renunciation of a non-religious belief or cause, such as a political party, social movement, or sports team. Apostasy is generally not a self-definition: few former believers call themselves apostates due to the term's negative connotation. Many religious groups and some states punish apostates; this may be the official policy of a particular religious group or it may simply be the voluntary action of its members. Such punishments may include shunning, excommunication, verbal abuse, physical violence, or even execution. The American sociologist Lewis A. Coser (following the German philosopher and sociologist Max Scheler) defines an apostate as not just a person who experienced a dramatic change in conviction but "a man who, even in his new state of belief, is spiritually living not primarily in the content of that faith, in the pursuit of goals appropriate to it, but only in the struggle against the old faith and for the sake of its negation." The American sociologist David G. Bromley defined the apostate role as follows and distinguished it from the defector and whistleblower roles. Apostate role: defined as one that occurs in a highly polarized situation in which an organization member undertakes a total change of loyalties by allying with one or more elements of an oppositional coalition without the consent or control of the organization.