At one time, the main Christian branch in England was the Anglican church. It was the church favored by the king and the British government. It was established as the official church, supported by money from the government. Those belief that there should be establishment of an official church was 'establishmentarianism" There was later a movement to remove the Anglican church as the established church of England. The act of removing the church as the official church was then 'disestablishmentarianism' . (Dis- meaning to take away or do away with.) Of course, there was a movement to fight this act - those people that wanted to keep the official church and resist the movement to remove it as the established church. If you know that 'anti-' is put in front of a word to mean being against it or resisting it, you have "antidisestablishmentarianism." A few too many syllables, if you ask me. Eventually, the people behind antidisestablishmentarianism finally got tired of carrying all those syllables around with them and the movement died out, of exhaustion, I think. Pronunciation: http://vocaroo.com/i/s03XTU641g8w

http://en.wikipedia.org/wiki/Antidisestablishmentarianism http://dictionary.reference.com/browse/antidisestablishmentarianism an·ti·dis·es·tab·lish·men·tar·i·an·ism    [an-tee-dis-uh-stab-lish-muhn-tair-ee-uh-niz-uhm, an-tahy-] noun opposition to the withdrawal of state support or recognition from an established church, especially the Anglican Church in 19th-century England.

1. opposition to the withdrawal of state support or recognition from an established church, especially the Anglican Church in 19th-century England. Word's origin: antidisestablishmentarianism 1838, said by Weekley to be first recorded in Gladstone's "Church and State," "in reference to a scheme directed against the Church of England," from establishment in the sense of "the ecclesiastical system established by law; the Church of England" (1731). Hence, establishmentarianism "the principle of a state church," and disestablish (1590s) "to deprive (a church) of especial state patronage and support" (first used specifically of Christian churches in 1806). Rarely used at all now except in examples of the longest words, amongst which it has been counted since at least 1923.