The Longest Words in the English Language

supercalifragilisticexpialidocious

a childish word thought to be the longest word(by some kids)

pneumonoultramicroscopicsilicovolcanoconiosis

a lung disease caused by silica dust

aequeosalinocalcalinosetaceoaluminosocupreovitriolic

a word to describe spa waters in England

asseocarnisanguineoviscericartilaginonervomedullary

a word to describe the structure of the human body

honorificabilitudinitatibus

capable of achieving honors

floccinaucinihilipilification

describing something useless

hippopotomonstrosesquipedalian

of or pertaining to very long words

antitransubstantiationalist

one who disagrees with the concept of or belief in the transubstantiation doctrine of the Catholic church.

antidisestablishmentarianism

opposition to the withdrawal of state support or recognition from an established church,