Yep, that’s a new word i learned tonight. I say new word, as it’s both new to me and evidently young etymologically.

Denotation:

hippopotomonstrosesquipedaliophobia (uncountable)

1. The fear of long words, ironically. It is literally the hippopotamus- and monster-related fear of very long words.

   Ben is a sufferer of a mild form of hippopotomonstrosesquipedaliophobia

Etymology

From hippopotomonstrosesquipedalian, an extension of sesquipedalian with monstrum “monster” and a truncated, misspelled form of hippopotamus, intended to exaggerate the length of the word itself and the idea of the size of the words being feared; combined with phobia.