Question: what are some really long words?
Answer: Pneumonoultramicroscopicsilicovolcanoconiosis (45 letters) ... 
Hippopotomonstrosesquippedaliophobia (36 letters) ... 
Supercalifragilisticexpialidocious (34 letters) ... 
Pseudopseudohypoparathyroidism (30 letters) ... 
Floccinaucinihilipilification (29 letters) ... 
Antidisestablishmentarianism (28 letters)