Longest word ever in the dictionary

The longest word in the dictionary containing no letter more than once is "smiley." (There is a mile between the first and last letter.)

But if you just want long words, the usual response is antidisestablishmentarianism, and this can be found in most dictionaries.

The longest town in the United Kingdom is in Wales. It is:

Llanfairpwllgwyngyllgogerychwyrndrobwllllant

The longest words in the English language without a repeated letter are:

uncopyrightable and dermatoglyphics

both with 15 letters!

a longer word in the dictionary that has no repeated leter is courage OMG *** @_@ Email Removed

that word is incorrect, you only have 1,859 letters!!

The longest word in the English dictionary, if you get a good one, is:

Pneumonoultramicroscopicslilcovolcanokoniosis

Longest word in the English language?

This thread is the "no repeated letter" version.

Due to the way the english language works, there is no longest word in the dictionary. The way that subject verb clauses and everything else fit together, leaves open the possibility for endless words. For verification, see Steven Pinker's, "The Language Instinct".

"Ultrarevolutionaries" maybe it doesnt follow the rule of the thread, no repeated letter, but the interesting part of this word is that each of the five main vowels appear twice

one of the only phrases in the english language which contains all the letters of the english language is:

the quick brown fox jumps over the lazy dog

And.. I wonder if you know what the technical word is for a sentence that contains every letter of the alphabet?

Answers on a postcard...