Antidisestablishmentarianism is an existing and correct English word. It's one of the longest English words.
"Antidisestablishmentarianism is a political position that originated in 19th-century Britain in opposition to proposals for the disestablishment of the Church of England, that is, to remove the Anglican Church's status as the state church of England, Ireland, and Wales."
http://en.wikipedia.org/wiki/Antidisestablishmentarianism