Antidisestablishmentarianism

n. A political philosophy opposed to the separation of a religious group (“church”) and a government (“state”), esp. the belief held by those in 19th century England opposed to separating the Anglican church from the civil government.

A quick search produces no noteworthy quotations making use of this word for its actual function. Indeed, it’s not the word of the day because it could possibly be useful to you, but because it’s so commonly utilized by sesquipedalian-wannabes who haven’t the slightest idea what it means.

I’ll be back before you can say ‘Antidisestablishmentarianism‘.
— Edmund Blackadder III

Extraordinary. There’s no other word for it. Antidisestablishmentarianism extraordinary, that is.
— Murphy, Rayman 3

I think we all know why. Anti-taco legislation! Disestablishmentarianism!
Turkatron, Aqua Teen Hunger Force

Etymology Pretty simple, really… Establishment, plus “dis” to end that establishment, plus “anti” to oppose ending it, and with -arianism to refer to it as a cohesive movement.