You searched for: “hippopotomonstrosesquipedaliophobia
hippopotomonstrosesquipedaliophobia (s) (noun) (no plural)
An abnormal dread of exceptionally long words: Suffering from hippopotomonstrosesquipedaliophobia, Jack is always very distressed with very long terms, so when he writes he aways uses language terminology with no more than 3 syllables!