1.
Antidisestablishmentarianism
2.
pneumonoultramicroscopicsilicovolcanoconiosis
3.
Hippopotomonstrosesquippedaliophobia
4.
Supercalifragilisticexpialidocious
5.
Pseudopseudohypoparathyroidism
6.
Floccinaucinihilipilification
9.
Methylenedioxymethamphetamine
10.
electroencephalographically
11.
Radioimmunoelectrophoresis
12.
Hydrochlorofluorocarbon
