2.
Pneumonoultramicroscopicsilicovolcanoconiosis
11.
Antidisestablishmentarianism
12.
Pseudopseudohypoparathyroidism
13.
Floccinaucinihilipilification
14.
Supercalifragilisticexpialidocious
15.
Hippopotomonstrosesquippedaliophobia
18.
Aequeosalinocalcalinoceraceoaluminosocupreovitriolic