Sesquipedal(i)ophobia is the fear of long words, a branch of logophobia. This term derives from sesquipedalian, which is a long word or a person who uses long words. A person suffering from this phobia is called sesquipedal(i)ophobic. ...
Sesquipedalophobia is the fear of long words.
sesquipedalophobia A hatred or a fear of big words.