Floccinaucinihilipilification :

What a word! It means “The action or habit of judging something to be worthless”. Longtime back, Eton College grammar book listed a set of words from Latin which all meant “of little or no value”. Those were flocci, nauci, nihili, and pili. Someone came up with all these words put together. And, as they say, the rest is history.

I am not very sure who would be using this word but it sure is fun to just learn it.

To my mind, the addition of “fication” seems to be the master stroke in creating this word!