otorhinolaryngological (22 letters), immunoelectrophoretically (25 letters), psychophysicotherapeutics (25 letters), thyroparathyroidectomized (25 letters), pneumoencephalographically (26 letters), radioimmunoelectrophoresis (26 letters),

I hope I type this correctly, because this was what I've studied long long ago that I couldn't read my own handwriting. Supercalafreigalisticexpraladocious = stupid, crazy, mad. I don't know...My teacher said that it was the

NO EVERYONE IS WRONG! the longest word ever written is

Actually, the longest word is 'beleaguered', because there's a league between the letters. 1 league = 3 miles.

sorrt to burst ur bubble but i have found one longer than the 3 of those words combined look it up some time its about 187,000 letters long have a look for it

I GOT IT!! UNCOPYRIGHTABLE AND DERMATOGLYPHICS I dont know how i know this i just do. U thought you could stump me!!! 8-D Here's a tricky one for you all... What is the longest word in the dictionary containing no letter more than once?

Words What is the longest English word containing no letter more than once? There are two 15-letter words that we know of: uncopyrightable and dermatoglyphics . What is the longest English word? We do

btw, its spelled "antidisestablishmentarianism" with "establishment", not 'stablishment'...

Actually, its pneumonultramicroscopicsilicovolcanoconiosis at 45 letters. Its a rare lung disease caused by a fine silico dust found in some volcanoes.

no the longest word is an infection you can get by inhalling tabacco