What is Sesquipedalian?
1.
ses·qui·pe·da·lian
n.
A long word.
adj.
1. Given to the use of long words.
2. Long and ponderous; polysyllabic.
A sesquipedalian is Throwing long word in a sentence that is un-needed:
Gregory found traffic court a Kafkaesque experience
2.
An extraordinarily large word. A word that only the pedantic use.
Pejorative is a sesquipedalian for insulting.