Hippopotomonstrosesquipedaliophobia 

Hippopotomonstrosesquipedaliophobia: an, innapropriaitely named, fear of long words.

Catherine: You look positively petrified, my good sire. Do you possess hippopotomonstrosesquipedaliophobia, by chance?
Jimmy: Yeah, I have hippopotomonst- FUCK WE'RE ALL GOING TO DIEE!! LOCK THE DOORS!! LOCK THE DOOORRRRS!!

Hippopotomonstrosesquipedaliophobia by JanisTheLunchLady November 5, 2013

Hippopotomonstrosesquippedaliophobia 

fear of long words

Doctor: I'm afraid you have Hippopotomonstrosesquippedaliophobia.
Patient: AHHHHHHHHHHHHH! Don't say that word!!!!!!!!!!

Hippopotomonstrosesquippedaliophobia by Nicolle August 13, 2003

Hippopotomonstrosesquipedalians 

A really long word that defines really long words.

We learned about Hippopotomonstrosesquipedalians in school today.

Hippopotomonstrosesquipedalians by bob izzle May 9, 2005

Hippopotomonstrosesquippediliophobia

The fear of long words

Hippopotomonstrosesquippediliophobia is the fear of long words

Hippopotomonstrosesquippediliophobia by Rick Singer March 1, 2005

Hippopotomonstrosesquippedaliophobia 

Damn were you really that bored that you searched this up? C'mon man... Jeez

bob= hey, i love that song that goes 'supercalifragilisticexpialidocious'
steve= AHHHHHHH STOP I HATE LONG WORDDZZ
bob= dude i think you must have Hippopotomonstrosesquippedaliophobia
steve= BROO STOP IT SCARES MEEEE

Hippopotomonstrosesquippedaliophobia by idonthavefrenz July 11, 2019

hippopotomonstrosesquipedaliaphobia 

Fear of long words. Since 'sesquipedaliaphobia' already means fear of long words, the other part is added on by those with hypopseudoliteratiobfuscationarianism.

"Homer retaliated, triggering Aesop's hippopotomonstrosesquipedaliaphobia with a hypopseudoliteratiobfuscationarionisticism of his own before jumping to a floccinaucinihilipilification of the whole process."

hippopotomonstrosesquipedaliaphobia by DC Dave October 14, 2016

Hippopotomonstrosesquippedaliophobia 

Perfect example of irony.

OMG! a big word!

"Hippopotomonstrosesquippedaliophobia"

Run away!

Hippopotomonstrosesquippedaliophobia by anneymal March 28, 2005