THEN there’s this, with 1909 letters-

Methionylglutaminylarginytyrosylglutamylserylleucylphenylalanylalanylglutaminyll-eucyllysylglutamylarginyllysylglutamylglycylalanylphenylalanyvalylprolylphenylalanyl-valythreonylleucylglycylaspartylprolyglycylisoleucylglutamylglutaminylserylleucyllysyl-isoleucylaspartylthreonylleucylisoleucylglutamylalanylglycylalanylaspartylalanylleucy-lglutamylleucylglycylglycylisoleucylprolylphenylalanylserylaspartylprolylleucelalanyla-spartyglycylprolythreonylisoleucylglutamiylasparaginylalanylthreonylleucylarginylala-nylphenylalanylalanylglycylvalyltheonylprolylalanylglutaminylcysteinylphenylalanygll-utamylmethionylleucyalanylleucylisoleucylarginylglutaminyllysylhistidylprolylthreonyl-isoleucylpriIylisoleucylglycylleucylleucylmethionyltyrosylalanylasparaginylleucylvalyp-henylalanylasparaginyllysylgyycylisoleucylaspartylglutamylphenylalanyltyrosylalanyl-gutaminyllcysteinylglutamyllysylvalylglycylavlylaspartylserylvalylleucylvalylalanylasp-artylvalyprolylvalylglutaminylglutamyllserylalanyprolyphenylalanylarginylglutaminylal-anylalanylleucylarginylhistidylasparaginylvaylalanylprolylisoleucylphenylalanylisoleu-cylcysteinylprolylprolylaspartylalanylaspartylaspartylaspartylleucylleucylarginyglutam-inylisoleucylalanyylseryltyrosylglycylarginylglycyltyrosylthreonyltyrosylleucylleucylser-ylarginylalanylglycylvalythreonylglycylalanylglutamylasparaginylarginylanylalanylleu-cylprolylleucylaspaaginylhistidylleucylvaylalanyllysylleucyllysylglutamyltyrosylasarag-inylglycylphenylalanylglycylisoleucylalanylprolylaspartylglutaminylvalyllysylalanylala-nylisoleucylaspartylalanylalanyglycylalanylalanyglycylalanylisoleucylserylglycyseryla-lanylisoleucylbalyllsylisoleucylisoleucylglutamyyylglutaminylhistidylasparaginylisole-ucylglutamylprolyglutamyllysylmethionylleucylalanylalanylleucyllysylvalylphenylalaby-lvalylglutaminlylprolylmethionyllysylalanylalanylthreonylarginylserine - which is supposedly the scientific name for Trypthophan synthetase, a protien with 267 amino acids.

Try saying that three times really fast....heck, just try saying it once!

AND, last, but not least is this-

deoxyribonucleic acid (DNA) is alleged to have 207 000 letters, but has never been printed in full.

Wowzers! <as you can see, my vocab isn’t all that large ;)

Yeah, I know, these are not common everyday words, but hey, saves your vocal chords because you won’t have to "SCREAM"

Oh, and I did successfully say the first one aloud. But not the second.

There has been some questions as to the longest word in the English language.

One source lists it as this (45 letters)-

Pneumonoultramicroscopicsilicovolcanoconiosis

according to the Oxford English Dictionary, "a factitious word alleged to mean 'a lung disease caused by the inhalation of very fine silica dust, causing inflammation in the lungs.'" A condition meeting the word's definition is normally called silicosis.

It is listed in the current editions of several dictionaries.

Pneumonoultramicroscopicsilicovolcanoconiosis succeeded electrophotomicrographically as the longest word in the English language recognized by the National Puzzlers' League at the opening session of the organization's 103rd semi-annual meeting held yesterday at the Hotel New Yorker. The puzzlers explained that the forty-five-letter word is the name of a special form of silicosis caused by ultra-microscopic particles of silica volcanic dust.

In a 1965 episode of I've Got a Secret, Buddy Hackett unrolls a banner with the word on it and has the panel try to pronounce it.

"Floccinaucinihilipilification," the second of Irish composer David Flynn's "Two Nonsense Songs," ends with the word sung in a mock operatic cadenza style.

The word often appears in books or stories as a comically long word:

In The Simpsons episode "Grampa vs. Sexual Inadequacy", Abraham Simpson asks Homer whether pneumonoultramicroscopicsilicovolcanoconiosis is what's wrong with Marge.

In an episode of Rocket Power, in which Twister successfully spells the word on his spelling test.

High School Musical 2: What's What Edition refers to this as the longest word.

(Wikipedia)