Hippopotomonstrosesquipedalian 

Pertains to a very long word.

Antidisestablishmentarianism is exceedingly hippopotomonstrosesquipedalian, but cannot compete with floccinaucinihilipilification.

Hippopotomonstrosesquipedalian by Ivor Biggen March 29, 2004

hippopotomonstrosesquipedaliophobia 

the fear of long words, which, ironically, is so ridiculously long that even people without hippopotomonstrosesquipedaliophobia may get overwhelmed by it

Pam: so you have hippopotomonstrosesquipedaliophobia
Ellen: SHHH
Pam: *grins*
Ellen: don't you dare
Pam: iiiiiiiiiit's SUPERCALIFRAGILI--
Ellen: *runs away, screaming*

hippopotomonstrosesquipedaliophobia by fanwaffles March 23, 2015

hippopotomonstrosesquipedaliophobia 

The fear of long words (I'm not kidding)

George: Kaleidoscopical

Tom: HOLY FUCK

George: dude whats your problem your acting like you have hippopotomonstrosesquipedaliophobia

Tom: Dude seriously SHUT THE FUCK UP

hippopotomonstrosesquipedaliophobia by spencer hastings November 30, 2013

hippopotomonstrosesquipedalianism 

The art of using VERY long words to confuse people. It comes from the root 'sesquipedalian', which means one who uses long words to (again) confuse people. Source: Mrs. Burns Dictionary of Obscure, and Preposterous Words.

Hippopotomonstrosesquipedalianism is the art of utilizing extremely elongated lexicons to give the appearance of being more intelligent to one's acquaintances.

hippopotomonstrosesquipedalianism by Dan Richards February 20, 2008

hippopotomonstrosesquipedaliophobia 

A ridiculously long word describing the phobia of one towards long words. Very ironic ah. ha. ha.

Hey Clark: Hey I heard you have hippopotomonstrosesquipedaliophobia

Clark: TOM DON'T ASHDHGSDSFDOIRYUIER!!!! *mumbles random shit being scared out of his underwear*

Tom: Hehehehe, how do you tell the psychiatrist?

Clark: I have hipposdjsdjksdhjjds!!! *mumbles vacuous crap in terror*

hippopotomonstrosesquipedaliophobia by Double Trouble and the dog. March 18, 2012

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

Hippopotomonstrosesquipedalians 

A really long word that defines really long words.

We learned about Hippopotomonstrosesquipedalians in school today.

Hippopotomonstrosesquipedalians by bob izzle May 9, 2005