One of my favorite words is sesquipedalian. It is a great polysyllabic adjective.
Sesquipedalian’s first word definition is having many syllables: long. Like the sesquipedalian technical terms used in medicine.
Its second word definition is given to or characterized by the use of long words. The sesquipedalian prose of medical journals.
I love the sesquipedalian nature of the word ‘sesquipedalian.’