I saw a few minutes of the movie, Love Happens, the other night. In it, the characters look up some words in the dictionary.
I was intrigued by one of them and looked it up myself. It is not in the pocket dictionary, so I googled it. It came up in wikipedia, but since that isn't very authoritarian, I pulled out the Deluxe Unabridged Dictionary.
Sesquipedalian. adj. characterized by the use of big words; or measuring a foot and a half long.
Pedantic. adj. artificially or exagerratedly scholarly.
Whilst googling, I discovered that others had made the same mistake I had at first. There were no quotations which included the word, sesquipedalian, but there were some with "sesquipedantic," which I would venture to guess is not a word. It is not in my unabridged dictionary.
If you are a pedant, or pedantic, your language is probably sesquipedalian.
The philolog is not pedantic and this blog is never sequipedalian. The philolog actually prefers monosyllablic words and has written many blogs about them.