antidisestablishmentarianistically 

"Behaving in the manner of a person who is in opposed to the separation of church and state".
It is a construction of the word disestablishment which was the separation of church and state.
It can be constructed further to 'propseudocontraneoantidisestablishmentarianalistically' whcih means "In favour of the false behaviour in the manner of a person belonging to the movement opposed to the new version of the movement opposed to the separation of church and state".
Basically just an example of how complex the english language can be:P

I behave antidisestablishmentarianistically.

antidisestablishmentarianistically by OuTLaWOwnz October 6, 2004

antidisestablishmentarianistically 

The way to use the longest word in the dictionary in such a way that it makes sense in conversation.

I wouldn't agree with what you just said, antidisestablishmentarianistically speaking, of course.

antidisestablishmentarianistically by DaWeirdo October 4, 2004

antidisestablishmentarianismically 

The act or state of mind of being against a group whom are against an establishment.

The civil servant seemed to react antidisestablishmentarianismically to the new idea proposed by the militant Minister.

antidisestablishmentarianismically by Philip Reeves September 19, 2003