Sesquipedalian

I learned a new word this morning. Sesquipedalian: characterized by big words.

Tommy (my 10 year old) told his piano teacher this morning that he found the new piece "captivating". To which his teacher told him he was being sesquipedalian. I had to admit that I never heard that word before.

I had heard of "combinatoriality", but not "sesquipedalian". Does that make me sesquipedalian?