Fears and phobias are very real and the human mind is capable of developing them towards virtually anything or any situation.

The fear of long words phobia or Hippopotomonstrosesquippedaliophobia is often considered a jocular or fictional phobia; however, that is not the case and long words phobia is actually very real and does exist.

People suffering from Hippopotomonstrosesquippedaliophobia tend to experience a great deal of anxiety when faced with long words. It is indeed ironical that the scientific name given to this phobia is such a long one.

Hippopotomonstrosesquippedaliophobia can actually be broken down into several parts: Hippo- is ‘horse’ in Greek and potam-os is river. Thus the first part of the word refers to a water horse also otherwise known as Hippopotamus. The Oxford Dictionary uses the word: Hippopotamine to refer to “something very large”. The word “monstr” is the Latin origin of a ‘monstrous being’ or something that is huge or terrifying and sesquippedalio is derived from Latin sesquippedali meaning ‘measuring a foot and a half long’. Phobos stands for morbid fear.

Source:https://www.fearof.net/fear-of-long-words-phobia-hippopotomonstrosesquippedaliophobia/